GCD of 636, 218, 19, 780 Calculator

Given Input numbers are 636, 218, 19, 780

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 218

List of positive integer divisors of 218 that divides 218 without a remainder.

1, 2, 109, 218

Divisors of 19

List of positive integer divisors of 19 that divides 19 without a remainder.

1, 19

Divisors of 780

List of positive integer divisors of 780 that divides 780 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

Greatest Common Divisior

We found the divisors of 636, 218, 19, 780 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 636, 218, 19, 780 is 1.

Therefore, GCD of numbers 636, 218, 19, 780 is 1

Given Input Data is 636, 218, 19, 780

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 218 is 2 x 109

Prime Factorization of 19 is 19

Prime Factorization of 780 is 2 x 2 x 3 x 5 x 13

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, 218) = 69324

GCD(636, 218) = ( 636 x 218 ) / 69324

GCD(636, 218) = 138648 / 69324

GCD(636, 218) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 19

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

LCM(2, 19) = 38

GCD(2, 19) = ( 2 x 19 ) / 38

GCD(2, 19) = 38 / 38

GCD(2, 19) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 780

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

LCM(1, 780) = 780

GCD(1, 780) = ( 1 x 780 ) / 780

GCD(1, 780) = 780 / 780

GCD(1, 780) = 1

GCD of 636, 218, 19, 780 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 926, 935, 87, 278
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• GCD of 743, 103, 96, 822

1. What is the GCD of 636, 218, 19, 780?

GCD of 636, 218, 19, 780 is 1

2. Where do I get the detailed procedure to find GCD of 636, 218, 19, 780?

You can find a detailed procedure to find GCD of 636, 218, 19, 780 on our page.

3. How to find GCD of 636, 218, 19, 780 on a calculator?

You can find the GCD of 636, 218, 19, 780 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.