1 2 3 6 2 18
1 2 3 6 2 18
Composite
1, 2, 4, 8, 16.
1, 2, 3, 6, 7, 14, 21, 42
they are 1,19
1 and 20, 2 and 10, 4 and 5
1, 2, 4, 5, 10, 20, 25, 50, 100.
28,1,14,2,7,4
1,2,3,4,6,8,12,24
1 x 10, 2 x 5, 5 x 2, 10 x 1
There are six prime factors of 64: 2 x 2 x 2 x 2 x 2 x 2 (26).