Factors of 1440
Factors of 1440 are integers that can be divided evenly into 1440. It has total 36 factors of which 1440 is the biggest factor and the prime factors of 1440 are 2, 3, 5. The Prime Factorization of 1440 is 25 × 32 × 51.
- All Factors of 1440: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720 and 1440
- Prime Factors of 1440: 2, 3, 5
- Prime Factorization of 1440: 25 × 32 × 51
- Sum of Factors of 1440: 4914
1. | What Are the Factors of 1440? |
2. | Factors of 1440 by Prime Factorization |
3. | Factors of 1440 in Pairs |
4. | FAQs on Factors of 1440 |
What are Factors of 1440?
Factors of 1440 are pairs of those numbers whose products result in 1440. These factors are either prime numbers or composite numbers.
How to Find the Factors of 1440?
To find the factors of 1440, we will have to find the list of numbers that would divide 1440 without leaving any remainder.
- 1440/4 = 360; therefore, 4 is a factor of 1440 and 360 is also a factor of 1440.
- 1440/40 = 36; therefore, 40 is a factor of 1440 and 36 is also a factor of 1440.
☛ Also Check:
- Factors of 125 - The factors of 125 are 1, 5, 25, 125
- Factors of 66 - The factors of 66 are 1, 2, 3, 6, 11, 22, 33, 66
- Factors of 11 - The factors of 11 are 1, 11
- Factors of 33 - The factors of 33 are 1, 3, 11, 33
- Factors of 30 - The factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30
Factors of 1440 by Prime Factorization
- 1440 ÷ 2 = 720
- 720 ÷ 2 = 360
- 360 ÷ 2 = 180
- 180 ÷ 2 = 90
- 90 ÷ 2 = 45
Further dividing 45 by 2 gives a non-zero remainder. So we stop the process and continue dividing the number 45 by the next smallest prime factor. We stop ultimately if the next prime factor doesn't exist or when we can't divide any further.
So, the prime factorization of 1440 can be written as 25 × 32 × 51 where 2, 3, 5 are prime.
Factors of 1440 in Pairs
Pair factors of 1440 are the pairs of numbers that when multiplied give the product 1440. The factors of 1440 in pairs are:
- 1 × 1440 = (1, 1440)
- 2 × 720 = (2, 720)
- 3 × 480 = (3, 480)
- 4 × 360 = (4, 360)
- 5 × 288 = (5, 288)
- 6 × 240 = (6, 240)
- 8 × 180 = (8, 180)
- 9 × 160 = (9, 160)
- 10 × 144 = (10, 144)
- 12 × 120 = (12, 120)
- 15 × 96 = (15, 96)
- 16 × 90 = (16, 90)
- 18 × 80 = (18, 80)
- 20 × 72 = (20, 72)
- 24 × 60 = (24, 60)
- 30 × 48 = (30, 48)
- 32 × 45 = (32, 45)
- 36 × 40 = (36, 40)
Negative pair factors of 1440 are:
- -1 × -1440 = (-1, -1440)
- -2 × -720 = (-2, -720)
- -3 × -480 = (-3, -480)
- -4 × -360 = (-4, -360)
- -5 × -288 = (-5, -288)
- -6 × -240 = (-6, -240)
- -8 × -180 = (-8, -180)
- -9 × -160 = (-9, -160)
- -10 × -144 = (-10, -144)
- -12 × -120 = (-12, -120)
- -15 × -96 = (-15, -96)
- -16 × -90 = (-16, -90)
- -18 × -80 = (-18, -80)
- -20 × -72 = (-20, -72)
- -24 × -60 = (-24, -60)
- -30 × -48 = (-30, -48)
- -32 × -45 = (-32, -45)
- -36 × -40 = (-36, -40)
NOTE: If (a, b) is a pair factor of a number then (b, a) is also a pair factor of that number.
Factors of 1440 Solved Examples
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Example 1: How many factors are there for 1440?
Solution:
The factors of 1440 are too many, therefore if we can find the prime factorization of 1440, then the total number of factors can be calculated using the formula shown below.
If the prime factorization of the number is ax × by × cz where a, b, c are prime, then the total number of factors can be given by (x + 1)(y + 1)(z + 1).
Prime Factorization of 1440 = 25 × 32 × 51
Therefore, the total number of factors are (5 + 1) × (2 + 1) × (1 + 1) = 6 × 3 × 2 = 36 -
Example 2: Find the Lowest Common Multiple (LCM) and Greatest Common Factor (GCF) of 1440 and 201.
Solution:
The factors of 1440 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440 and factors of 201 are 1, 3, 67, 201.
Therefore, the Lowest Common Multiple (LCM) of 1440 and 201 is 96480 and Greatest Common Factor (GCF) of 1440 and 201 is 3. -
Example 3: Find if 4, 6, 20, 30, 48, 96, 144 and 787 are factors of 1440.
Solution:
When we divide 1440 by 787 it leaves a remainder. Therefore, the number 787 is not a factor of 1440. All numbers except 787 are factors of 1440.
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Example 4: Find the product of all the prime factors of 1440.
Solution:
Since, the prime factors of 1440 are 2, 3, 5. Therefore, the product of prime factors = 2 × 3 × 5 = 30.
FAQs on Factors of 1440
What are the Factors of 1440?
The factors of 1440 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440 and its negative factors are -1, -2, -3, -4, -5, -6, -8, -9, -10, -12, -15, -16, -18, -20, -24, -30, -32, -36, -40, -45, -48, -60, -72, -80, -90, -96, -120, -144, -160, -180, -240, -288, -360, -480, -720, -1440.
What is the Sum of all the Factors of 1440?
Sum of all factors of 1440 = (25 + 1 - 1)/(2 - 1) × (32 + 1 - 1)/(3 - 1) × (51 + 1 - 1)/(5 - 1) = 4914
What are the Prime Factors of 1440?
The prime factors of 1440 are 2, 3, 5.
What is the Greatest Common Factor of 1440 and 143?
The factors of 1440 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440 and the factors of 143 are 1, 11, 13, 143. 1440 and 143 have only one common factor which is 1. This implies that 1440 and 143 are co-prime.
Hence, the Greatest Common Factor (GCF) of 1440 and 143 is 1.
What are the Common Factors of 1440 and 278?
Since, the factors of 1440 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440 and the factors of 278 are 1, 2, 139, 278.
Hence, [1, 2] are the common factors of 1440 and 278.
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