what is a divisor

In mathematics, a divisor of an integer n, also called a factor of n, is an integer m that may be multiplied by some integer to produce n. A divisor is a number that divides another number either completely or with a remainder. The number being divided is called the dividend, and the number by which we divide is the divisor. The result of the division is called the quotient. If a number is divisible or evenly divisible by another number, it means that the second number is a divisor of the first number, and dividing by it leaves no remainder. A divisor of n that is not equal to 1, -1, n, or -n is known as a non-trivial divisor (or strict divisor) . A nonzero integer with at least one non-trivial divisor is known as a composite number, while the units -1 and 1 and prime numbers have no non-trivial divisors.