Factors of 387 are the list of integers that we can split evenly into 387. It has a total of 6 factors of which 387 is the biggest factor and the positive factors of 387 are 1, 3, 9, 43, 129, 387. The sum of all factors of 387 is 572. Its Prime Factors are 3 × 43 and (1, 387), (3, 129), (9, 43) are Pair Factors.

• All Factors of 387: 1, 3, 9, 43, 129 and 387
• Negative Factors of 387: -1, -3, -9, -43, -129 and -387
• Prime Factors of 387: 3, 43
• Prime Factorization of 387: 3² × 43¹
• Sum of Factors of 387: 572

1.	What Are the Factors of 387?
2.	Factors of 387 by Prime Factorization
3.	Factors of 387 in Pairs
4.	FAQs on Factors of 387

Factors of 387 are pairs of those numbers whose products result in 387. These factors are either prime numbers or composite numbers.

How to Find the Factors of 387?

To find the factors of 387, we will have to find the list of numbers that would divide 387 without leaving any remainder.

• 387/43 = 9; therefore, 43 is a factor of 387 and 9 is also a factor of 387.
• 387/3 = 129; therefore, 3 is a factor of 387 and 129 is also a factor of 387.

Similarly we can find other factors. Hence, the factors of 387 are 1, 3, 9, 43, 129, 387.

☛ Also Check:

• Factors of 27 - The factors of 27 are 1, 3, 9, 27
• Factors of 42 - The factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42
• Factors of 13 - The factors of 13 are 1, 13
• Factors of 12 - The factors of 12 are 1, 2, 3, 4, 6, 12
• Factors of 29 - The factors of 29 are 1, 29

The number 387 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 387. The first step is to divide the number 387 with the smallest prime factor, here it is 3. We keep dividing until it gives a non-zero remainder.

• 387 ÷ 3 = 129
• 129 ÷ 3 = 43

Further dividing 43 by 3 gives a non-zero remainder. So we stop the process and continue dividing the number 43 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 387 can be written as 3² × 43¹ where 3, 43 are prime.

Pair factors of 387 are the pairs of numbers that when multiplied give the product 387. The factors of 387 in pairs are:

• 1 × 387 = (1, 387)
• 3 × 129 = (3, 129)
• 9 × 43 = (9, 43)

Negative pair factors of 387 are:

• -1 × -387 = (-1, -387)
• -3 × -129 = (-3, -129)
• -9 × -43 = (-9, -43)

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