What are the factors of 70 that are not prime numbers?

The factors of 70 that are not prime numbers are 2, 5, 7, 10, 14, 35, and 70. Prime numbers are numbers that are only divisible by 1 and themselves. In the case of 70, the factors that are not prime are the numbers that can be divided evenly into 70 aside from 1 and 70.