Factors of 170

All factors of 170

Here are all 8 factors of 170, listed from smallest to largest.

Factor pairs of 170

These 4 pairs of whole numbers each multiply to give 170.

Prime factorization of 170

Dividing 170 by the smallest prime at each step gives its prime factorization:

The distinct prime factors of 170 are 2, 5, 17. To factorize any other number, use the prime factorization calculator.

Factor tree of 170

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

Properties of 170

What makes 170 interesting

• 170 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 4 different ways.
• 170 is a deficient number: its proper factors sum to 154, which is 16 less than 170 itself.
• 170 has 3 distinct prime factors (2, 5, 17), which is why it has so many divisors.

How to find the factors of 170 yourself

Divide 170 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 √170 ≈ 13.04, because every factor above that pairs with one below it.

Reading both columns gives every factor: 1, 2, 5, 10, 17, 34, 85, 170. The factor calculator does this automatically for any number.