GCD of 636, 556, 72, 865 Calculator

Given Input numbers are 636, 556, 72, 865

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 636

List of positive integer divisors of 636 that divides 636 without a remainder.

1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636

Divisors of 556

List of positive integer divisors of 556 that divides 556 without a remainder.

1, 2, 4, 139, 278, 556

Divisors of 72

List of positive integer divisors of 72 that divides 72 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Divisors of 865

List of positive integer divisors of 865 that divides 865 without a remainder.

1, 5, 173, 865

Greatest Common Divisior

We found the divisors of 636, 556, 72, 865 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 636, 556, 72, 865 is 1.

Therefore, GCD of numbers 636, 556, 72, 865 is 1

Given Input Data is 636, 556, 72, 865

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 636 is 2 x 2 x 3 x 53

Prime Factorization of 556 is 2 x 2 x 139

Prime Factorization of 72 is 2 x 2 x 2 x 3 x 3

Prime Factorization of 865 is 5 x 173

The above numbers do not have any common prime factor. So GCD is 1

Step1:

Let's calculate the GCD of first two numbers

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(636, 556) = 88404

GCD(636, 556) = ( 636 x 556 ) / 88404

GCD(636, 556) = 353616 / 88404

GCD(636, 556) = 4

Step2:

Here we consider the GCD from the above i.e. 4 as first number and the next as 72

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(4, 72) = 72

GCD(4, 72) = ( 4 x 72 ) / 72

GCD(4, 72) = 288 / 72

GCD(4, 72) = 4

Step3:

Here we consider the GCD from the above i.e. 4 as first number and the next as 865

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(4, 865) = 3460

GCD(4, 865) = ( 4 x 865 ) / 3460

GCD(4, 865) = 3460 / 3460

GCD(4, 865) = 1

GCD of 636, 556, 72, 865 is 1

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1. What is the GCD of 636, 556, 72, 865?

GCD of 636, 556, 72, 865 is 1

2. Where do I get the detailed procedure to find GCD of 636, 556, 72, 865?

You can find a detailed procedure to find GCD of 636, 556, 72, 865 on our page.

3. How to find GCD of 636, 556, 72, 865 on a calculator?

You can find the GCD of 636, 556, 72, 865 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.