Only the number one (1) does.
No. 15 is not evenly divisible by 12.
The numbers 1,2,3,5,6,10,15,and 30 go into 30 evenly.
The factors of 15 are 1, 3, 5, and 15.
1,2,4 EVENLY
3
It is: 1
One.
1, 3, 5, 15.
1, 3, 5 and 15.
The GCF of 15 and 20 is 5
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60.