Factors of 165 are the list of integers that we can split evenly into 165. There are 8 factors of 165 of which 165 itself is the biggest factor and its positive factors are 1, 3, 5, 11, 15, 33, 55, 165. The sum of all factors of 165 is 288. Its Prime Factors are 3 × 5 × 11 and (1, 165), (3, 55), (5, 33), (11, 15) are Pair Factors.

• All Factors of 165: 1, 3, 5, 11, 15, 33, 55 and 165
• Negative Factors of 165: -1, -3, -5, -11, -15, -33, -55 and -165
• Prime Factors of 165: 3, 5, 11
• Prime Factorization of 165: 3¹ × 5¹ × 11¹
• Sum of Factors of 165: 288

1.	What Are the Factors of 165?
2.	Factors of 165 by Prime Factorization
3.	Factors of 165 in Pairs
4.	FAQs on Factors of 165

Factors of 165 are pairs of those numbers whose products result in 165. These factors are either prime numbers or composite numbers.

How to Find the Factors of 165?

To find the factors of 165, we will have to find the list of numbers that would divide 165 without leaving any remainder.

• 165/3 = 55; therefore, 3 is a factor of 165 and 55 is also a factor of 165.
• 165/15 = 11; therefore, 15 is a factor of 165 and 11 is also a factor of 165.

Similarly we can find other factors. Hence, the factors of 165 are 1, 3, 5, 11, 15, 33, 55, 165.

☛ Also Check:

• Factors of 52 - The factors of 52 are 1, 2, 4, 13, 26, 52
• Factors of 37 - The factors of 37 are 1, 37
• Factors of 36 - The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36
• Factors of 50 - The factors of 50 are 1, 2, 5, 10, 25, 50
• Factors of 128 - The factors of 128 are 1, 2, 4, 8, 16, 32, 64, 128

The number 165 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 165. The first step is to divide the number 165 with the smallest prime factor, here it is 3. We keep dividing until it gives a non-zero remainder.

• 165 ÷ 3 = 55

Further dividing 55 by 3 gives a non-zero remainder. So we stop the process and continue dividing the number 55 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 165 can be written as 3¹ × 5¹ × 11¹ where 3, 5, 11 are prime.

Pair factors of 165 are the pairs of numbers that when multiplied give the product 165. The factors of 165 in pairs are:

• 1 × 165 = (1, 165)
• 3 × 55 = (3, 55)
• 5 × 33 = (5, 33)
• 11 × 15 = (11, 15)

Negative pair factors of 165 are:

• -1 × -165 = (-1, -165)
• -3 × -55 = (-3, -55)
• -5 × -33 = (-5, -33)
• -11 × -15 = (-11, -15)

NOTE: If (a, b) is a pair factor of a number then (b, a) is also a pair factor of that number.