The gcf of 64 and 48 is 16
Factors of 64:
1*64
2*32
4*16
8*8
16*4
32*2
64*1
So 1, 2, 4, 8, 16, 32, and 64 are factors of 64.
Factors of 48:
1*48
2*24
3*16
4*12
6*8
8*6
12*4
16*3
24*2
48*1
So the factors of 48 are:1, 2, 3, 4, 6, 8, 12, 16, 24, and 48.
The greatest common number (or factor) between 64 and 48 is 16.