What are the factors and prime factors of 15 and 24?

The factors of 15 are: 1, 3, 5, and 15.

The prime factors of 15 are: 3 and 5.

The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, and 24.

The prime factors of 24 are: 2 and 3.

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

Factors of 15: 1, 3, 5, 15
Factors are numbers which divide evenly the number given. 15 can divide by the primes 3 and 5, and so the factors are 1,3,5 and 15

24 can divide by the primes 2, 2, 2, 2 and 3, and so the factors are 1,2,3,4,6,8,12 and 24.

The common factors of 15 and 24 are 1 and 3, and the highest common factor is 3.