The factor pairs are factor strings of length 2:
1 x 48, 2 x 24, 3 x 16, 4 x 12, 6 x 8
The prime factorization is the longest factor string, which has a length of 5:
2 x 2 x 2 x 2 x 3
There are other factor strings:
2 x 2 x 12
2 x 3 x 8
2 x 4 x 6
2 x 2 x 2 x 6
2 x 2 x 3 x 4
2 x 24
3 x 16
4 x 12
6 x 8
2 x 2 x 12
2 x 3 x 8
2 x 2 x 2 x 6
2 x 2 x 3 x 4
2 x 2 x 2 x 2 x 3
2 x 2 x 13 = 52
8x3x5x7, 28x10x3 there are a ton more but don't have time to write them
This is a terminology issue. 48 is not a factor of 8. 48 is a multiple of 8 and 8 is a factor of 48.
The greatest common factor for 36 and 48 is 12.
The greatest common factor of 48 and 28 is 4.
What are the factor strings of 120
2*6,4*3
3 x 41 = 123
Factor strings are multiplication sentences. 3 x 3 is a factor string for 9.
41 is prime. No strings.
23 is prime. No strings.
1 to 48
2 x 2 x 13 = 52
2 x 2 x 11 = 44
It can be. 48 is a factor of 96.
7 is not a factor of 48.
The longest factor string for 45 is 3 x 3 x 5