What is a factor?
A number \(n\) is a factor of another number \(N\) if the division \(N \div n\) leaves remainder = 0.
Equivalently, \(N = n \times m\) for some integer \(m\).
Example: 3 is a factor of 6 because 6 ÷ 3 = 2 remainder 0.
3 is NOT a factor of 7 because 7 ÷ 3 gives remainder 1.
Find all common factors of two or more positive integers. Displays factor lists, the common ones, and the greatest common factor (GCF).
Greatest Common Factor (GCF) Calculator
Divisibility Test Calculator
Prime Factors Calculator