Which list shows all the factor pairs of 64?
2 x 32
4 x 16
8x8
1 x 64
2 × 32
4 x 16
8x8
1 x 64
2 × 64
3 x 64
4 x 64
2 × 32
4 x 16
8x8
16 x 4
32 × 2