Factors of 285 are the list of integers that can be evenly divided into 285. There are 8 factors of 285 of which 285 itself is the biggest factor and its positive factors are 1, 3, 5, 15, 19, 57, 95, 285. The sum of all factors of 285 is 480. Its Prime Factors are 3 × 5 × 19 and (1, 285), (3, 95), (5, 57), (15, 19) are Pair Factors.

• All Factors of 285: 1, 3, 5, 15, 19, 57, 95 and 285
• Negative Factors of 285: -1, -3, -5, -15, -19, -57, -95 and -285
• Prime Factors of 285: 3, 5, 19
• Prime Factorization of 285: 3¹ × 5¹ × 19¹
• Sum of Factors of 285: 480

1.	What Are the Factors of 285?
2.	Factors of 285 by Prime Factorization
3.	Factors of 285 in Pairs
4.	FAQs on Factors of 285

Factors of 285 are pairs of those numbers whose products result in 285. These factors are either prime numbers or composite numbers.

How to Find the Factors of 285?

To find the factors of 285, we will have to find the list of numbers that would divide 285 without leaving any remainder.

• 285/1 = 285; therefore, 1 is a factor of 285.
• 285/15 = 19; therefore, 15 is a factor of 285.

Similarly we can find other factors. Hence, the factors of 285 are 1, 3, 5, 15, 19, 57, 95, 285.

☛ Also Check:

• Factors of 91 - The factors of 91 are 1, 7, 13, 91
• Factors of 55 - The factors of 55 are 1, 5, 11, 55
• Factors of 40 - The factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40
• Factors of 63 - The factors of 63 are 1, 3, 7, 9, 21, 63
• Factors of 144 - The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144

The number 285 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 285. The first step is to divide the number 285 with the smallest prime factor, here it is 3. We keep dividing until it gives a non-zero remainder.

• 285 ÷ 3 = 95

Further dividing 95 by 3 gives a non-zero remainder. So we stop the process and continue dividing the number 95 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 285 can be written as 3¹ × 5¹ × 19¹ where 3, 5, 19 are prime.

Pair factors of 285 are the pairs of numbers that when multiplied give the product 285. The factors of 285 in pairs are:

• 1 × 285 = (1, 285)
• 3 × 95 = (3, 95)
• 5 × 57 = (5, 57)
• 15 × 19 = (15, 19)

Negative pair factors of 285 are:

• -1 × -285 = (-1, -285)
• -3 × -95 = (-3, -95)
• -5 × -57 = (-5, -57)
• -15 × -19 = (-15, -19)

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