1 and 239
No.
No.
717 is divisible by: 1, 3, 239, 717.
717 / 3 = 239
All numbers are divisible by 1.
1 and 239.
2, 5, 10, 239, 478, 1195.
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.
225
between 1 and 600 inclusive there are:300 numbers divisible by 2200 numbers divisible by 3100 numbers divisible by both 2 and 3400 numbers divisible by 2 or 3.
All whole numbers are divisible. If you mean divisible by numbers other than 1 and themselves, the answer is the set of composite numbers.
Yes; all numbers that are divisible by 9 are divisible by 3.