List the factors of 48 and 120

If you are referring to the common factors:

Factorize both numbers:

48 = 2*2*2*2*3

120 = 2*2*2*3*5

Common factors: 1, 2, 3, 4, 6, 8, 12, 24

If you are referring to factors in general:

48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

120: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120