What are the factors of 16 and 144?

The factors of 16 are: 1, 2, 4, 8, and 16.
The prime factors of 16 are: 2.

The factors of 144 are: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, and 144.
The prime factors of 144 are: 2 and 3.