321 is divisible by these four numbers: 1, 3, 107, 321.
No - 321/2 = 160.5.
321 / 6 = 53.5
By any of its factors which are: 1, 3, 107 and 321
No.
No.
Yes, 321 is divisible by 3 because the sum of its digits (3 + 2 + 1) equals 6, which is a multiple of 3.
Out of that list, only 3.
Both are divisible by 3.
All numbers are divisible by 1.
1, 3, 107, 321
They are: 1, 3, 107 and 321
Prime numbers are divisible because any numbers that are divisible are prime. If a number isn't divisible, it isn't prime. Prime numbers have to be divisible by at least one pair of numbers to be prime.