GCD of 621, 812, 22, 990 Calculator

Given Input numbers are 621, 812, 22, 990

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

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Divisors of 812

List of positive integer divisors of 812 that divides 812 without a remainder.

1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812

Divisors of 22

List of positive integer divisors of 22 that divides 22 without a remainder.

1, 2, 11, 22

Divisors of 990

List of positive integer divisors of 990 that divides 990 without a remainder.

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990

Greatest Common Divisior

We found the divisors of 621, 812, 22, 990 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 621, 812, 22, 990 is 1.

Therefore, GCD of numbers 621, 812, 22, 990 is 1

Given Input Data is 621, 812, 22, 990

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

Prime Factorization of 621 is 3 x 3 x 3 x 23

Prime Factorization of 812 is 2 x 2 x 7 x 29

Prime Factorization of 22 is 2 x 11

Prime Factorization of 990 is 2 x 3 x 3 x 5 x 11

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(621, 812) = 504252

GCD(621, 812) = ( 621 x 812 ) / 504252

GCD(621, 812) = 504252 / 504252

GCD(621, 812) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 22

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

LCM(1, 22) = 22

GCD(1, 22) = ( 1 x 22 ) / 22

GCD(1, 22) = 22 / 22

GCD(1, 22) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 990

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

LCM(1, 990) = 990

GCD(1, 990) = ( 1 x 990 ) / 990

GCD(1, 990) = 990 / 990

GCD(1, 990) = 1

GCD of 621, 812, 22, 990 is 1

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1. What is the GCD of 621, 812, 22, 990?

GCD of 621, 812, 22, 990 is 1

2. Where do I get the detailed procedure to find GCD of 621, 812, 22, 990?

You can find a detailed procedure to find GCD of 621, 812, 22, 990 on our page.

3. How to find GCD of 621, 812, 22, 990 on a calculator?

You can find the GCD of 621, 812, 22, 990 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.