is-8-a-factor-of-4

is 8 a factor of 40 is 8 a factor of 4 is 8 a factor of 48 is 8 a factor of 42 is 8 a factor of 44 is 8 a factor of 40 why or why not is 8 a factor of 420 is 8 a factor of 45 is 8 a factor of 49 is 8 a factor of 46