In mathematics, a divisor of an integer "n", also called a factor of "n", is an integer which divides "n" without leaving a remainder. The statement ""m" is a divisor of "n"" can be written as formula_1. Any number is always divisible by 1 and itself, which are two of the divisors. A prime number is a number with no other divisors. The positive divisors of a number "n", other than "n" itself, are the proper divisors of "n".