The largest number dividing two or more numbers into the
same number is called the GCM , or the largest common divisor, GCD , when the
common divisors of these numbers are the largest. The largest common divisor of
natural numbers a and b is denoted GCD (a, b) or (a, b) GCD. How can you use **GCD calculator ? **It’s so easy. Firstly,
we write two numbers side by side to make a divisor list. Then we start from
the smallest prime number. If the two numbers are not divided, we are look at large prime number. Processing
continues until both numbers are 1. However, the important thing here is that
we need to mark the divisor numbers for both numbers. For example, the common
prime factors 18, 24 and 30 are the common prime factors 2 and 3. By
multiplying by 2 and 3, there are 2x3 = 6 numbers. So the number 6 is the
largest number that can divide the numbers 18, 24 and 30.