GCD of 420, 797, 20, 702 Calculator

Given Input numbers are 420, 797, 20, 702

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

Divisors of 420

List of positive integer divisors of 420 that divides 420 without a remainder.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

Divisors of 797

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

1, 797

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 702

List of positive integer divisors of 702 that divides 702 without a remainder.

1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702

Greatest Common Divisior

We found the divisors of 420, 797, 20, 702 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 420, 797, 20, 702 is 1.

Therefore, GCD of numbers 420, 797, 20, 702 is 1

Given Input Data is 420, 797, 20, 702

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

Prime Factorization of 420 is 2 x 2 x 3 x 5 x 7

Prime Factorization of 797 is 797

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 702 is 2 x 3 x 3 x 3 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(420, 797) = 334740

GCD(420, 797) = ( 420 x 797 ) / 334740

GCD(420, 797) = 334740 / 334740

GCD(420, 797) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 20

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

LCM(1, 20) = 20

GCD(1, 20) = ( 1 x 20 ) / 20

GCD(1, 20) = 20 / 20

GCD(1, 20) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 702

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

LCM(1, 702) = 702

GCD(1, 702) = ( 1 x 702 ) / 702

GCD(1, 702) = 702 / 702

GCD(1, 702) = 1

GCD of 420, 797, 20, 702 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 668, 124, 60, 884
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• GCD of 678, 392, 82, 368

1. What is the GCD of 420, 797, 20, 702?

GCD of 420, 797, 20, 702 is 1

2. Where do I get the detailed procedure to find GCD of 420, 797, 20, 702?

You can find a detailed procedure to find GCD of 420, 797, 20, 702 on our page.

3. How to find GCD of 420, 797, 20, 702 on a calculator?

You can find the GCD of 420, 797, 20, 702 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.