How about 16 whose factors are 1 2 4 8 and 16
20 and 28 both have six factors.
The factors of 16 are 1, 2, 4, 8, and 16.
12, 18 and 20 each have six factors.
16 has five factors.
16 has five factors.
5, 10, 15 and 20 have five as a factor. The number 16 has five factors.
30 is the only number between 20 and 50 that is a factor of 60
16
16
12
16
28