GCD of 21, 572, 367, 642 Calculator

Given Input numbers are 21, 572, 367, 642

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

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 572

List of positive integer divisors of 572 that divides 572 without a remainder.

1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 572

Divisors of 367

List of positive integer divisors of 367 that divides 367 without a remainder.

1, 367

Divisors of 642

List of positive integer divisors of 642 that divides 642 without a remainder.

1, 2, 3, 6, 107, 214, 321, 642

Greatest Common Divisior

We found the divisors of 21, 572, 367, 642 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 21, 572, 367, 642 is 1.

Therefore, GCD of numbers 21, 572, 367, 642 is 1

Given Input Data is 21, 572, 367, 642

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

Prime Factorization of 21 is 3 x 7

Prime Factorization of 572 is 2 x 2 x 11 x 13

Prime Factorization of 367 is 367

Prime Factorization of 642 is 2 x 3 x 107

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(21, 572) = 12012

GCD(21, 572) = ( 21 x 572 ) / 12012

GCD(21, 572) = 12012 / 12012

GCD(21, 572) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 367

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

LCM(1, 367) = 367

GCD(1, 367) = ( 1 x 367 ) / 367

GCD(1, 367) = 367 / 367

GCD(1, 367) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 642

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

LCM(1, 642) = 642

GCD(1, 642) = ( 1 x 642 ) / 642

GCD(1, 642) = 642 / 642

GCD(1, 642) = 1

GCD of 21, 572, 367, 642 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 71, 810, 117, 304
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• GCD of 32, 960, 296, 178
• GCD of 27, 521, 815, 315
• GCD of 68, 173, 250, 691

1. What is the GCD of 21, 572, 367, 642?

GCD of 21, 572, 367, 642 is 1

2. Where do I get the detailed procedure to find GCD of 21, 572, 367, 642?

You can find a detailed procedure to find GCD of 21, 572, 367, 642 on our page.

3. How to find GCD of 21, 572, 367, 642 on a calculator?

You can find the GCD of 21, 572, 367, 642 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.