Just multiply 260 by numbers: 520 (2x), 780 (3x), etc.
No it is not.
No.
All multiples of 260 (which are infinite) including 260, 520, 780, 1040, 1300 . . .
Yes, 520 / 2 = 260
Hdhdjkg
Yes, the result is 130.
All numbers are divisible by 1.
The prime factors of 520 are: 2 5 13
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.
All whole numbers are divisible. If you mean divisible by numbers other than 1 and themselves, the answer is the set of composite numbers.
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.