I think that it is 4
12
45
It is 2^6 = 64.
3
I think that it is 4
The smallest number that has exactly eight factors is 24. The factors of 1,2,3,4,6,8,12, and 24
The factors of 4 are 1, 2, and 4 .
The smallest number with exactly eight factors is 24.
192
6
192
6
4096
12
1024
The smallest number that has exactly three factors is 4.