Question

In how many ways 648 can be written as a product of two factors

Answer 1

1x648=2 ways 1
2x324=2 ways 2
3x216=2 ways 3
4x162=2 ways 4
6x108=2 ways 5
8x81=2 ways 6
9x72=2 ways 7
12x54=2 ways 8
18x36=2 ways 9
24x27=2 ways 10
10x2ways =20 ways