1, 3, 5 and 15.
1,3,5,15
16,384
if they have no obvious common factors (such as 3!!!!!!!) then you multiply them to get the GCF.
10 and 5.
The factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72 The factors of 15: 1, 3, 5, 15
144 has 15 factors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144.
The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72 and 144, fifteen in all.
If in my garden all fifteen.
30
Because 45 is not a factor of 60, whereas 15 and 30 are.
Of the fifteen Soviet republics eventually declared their independence
The factors of 15 are:1, 3, 5, 15The factors of 35 are:1, 5, 7, 35The common factors are: 1, 5