Factors of 387

All factors of 387

Here are all 6 factors of 387, listed from smallest to largest.

Factor pairs of 387

These 3 pairs of whole numbers each multiply to give 387.

Prime factorization of 387

Dividing 387 by the smallest prime at each step gives its prime factorization:

The distinct prime factors of 387 are 3, 43. To factorize any other number, use the prime factorization calculator.

Factor tree of 387

A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.

Properties of 387

What makes 387 interesting

• 387 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 3 different ways.
• 387 is a deficient number: its proper factors sum to 185, which is 202 less than 387 itself.

How to find the factors of 387 yourself

Divide 387 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √387 ≈ 19.67, because every factor above that pairs with one below it.

Reading both columns gives every factor: 1, 3, 9, 43, 129, 387. The factor calculator does this automatically for any number.