GCD of 21, 797, 646, 469 Calculator

Given Input numbers are 21, 797, 646, 469

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 797

List of positive integer divisors of 797 that divides 797 without a remainder.

1, 797

Divisors of 646

List of positive integer divisors of 646 that divides 646 without a remainder.

1, 2, 17, 19, 34, 38, 323, 646

Divisors of 469

List of positive integer divisors of 469 that divides 469 without a remainder.

1, 7, 67, 469

Greatest Common Divisior

We found the divisors of 21, 797, 646, 469 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 21, 797, 646, 469 is 1.

Therefore, GCD of numbers 21, 797, 646, 469 is 1

Given Input Data is 21, 797, 646, 469

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

Prime Factorization of 21 is 3 x 7

Prime Factorization of 797 is 797

Prime Factorization of 646 is 2 x 17 x 19

Prime Factorization of 469 is 7 x 67

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, 797) = 16737

GCD(21, 797) = ( 21 x 797 ) / 16737

GCD(21, 797) = 16737 / 16737

GCD(21, 797) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 646

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

LCM(1, 646) = 646

GCD(1, 646) = ( 1 x 646 ) / 646

GCD(1, 646) = 646 / 646

GCD(1, 646) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 469

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

LCM(1, 469) = 469

GCD(1, 469) = ( 1 x 469 ) / 469

GCD(1, 469) = 469 / 469

GCD(1, 469) = 1

GCD of 21, 797, 646, 469 is 1

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• GCD of 35, 871, 679, 286
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• GCD of 35, 940, 900, 203

1. What is the GCD of 21, 797, 646, 469?

GCD of 21, 797, 646, 469 is 1

2. Where do I get the detailed procedure to find GCD of 21, 797, 646, 469?

You can find a detailed procedure to find GCD of 21, 797, 646, 469 on our page.

3. How to find GCD of 21, 797, 646, 469 on a calculator?

You can find the GCD of 21, 797, 646, 469 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.