2 and 4 are. 8 isn't. If you divide the numbers into 348 and the result is an integer, they are factors. 8 doesn't divide evenly.
1, 2, 3, 4, 6, 12, 29, 58, 87, 116, 174, 348.
4 goes into 348 87 times because 348 divided by 4=87
No, 4 does not go into 105 evenly.
Is 348 divisible by 4?
Yes, but not evenly.
87
Not evenly.
No.
Not evenly.
No.
43 with remainder 4.