In mathematics, the greatest common factor (gcf), also known as the greatest common divisor (gcd), greatest common measure (gcm), or highest common factor (hcf), of two or more integers, is the largest positive integer that divides the numbers without a remainder.
For example
To number 25, divisors are 1, 5, 25.
To number 50, divisors are 1, 2, 5, 10, 25, 50. (Use Divisors Calculator get the divisor/factor.)
The common factors of 25 and 50 are 1, 5, 25. So the greatest common factor is 25.
To the calculator also can provides Common Factors, For example to the number 2500 and 10000, the common factors are 1,2,4,5,10,20,25,50,100,125,250,500,625,1250,2500.