GCD of 488, 637, 21, 189 Calculator

Given Input numbers are 488, 637, 21, 189

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

Divisors of 488

List of positive integer divisors of 488 that divides 488 without a remainder.

1, 2, 4, 8, 61, 122, 244, 488

Divisors of 637

List of positive integer divisors of 637 that divides 637 without a remainder.

1, 7, 13, 49, 91, 637

Divisors of 21

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

1, 3, 7, 21

Divisors of 189

List of positive integer divisors of 189 that divides 189 without a remainder.

1, 3, 7, 9, 21, 27, 63, 189

Greatest Common Divisior

We found the divisors of 488, 637, 21, 189 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 488, 637, 21, 189 is 1.

Therefore, GCD of numbers 488, 637, 21, 189 is 1

Given Input Data is 488, 637, 21, 189

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

Prime Factorization of 488 is 2 x 2 x 2 x 61

Prime Factorization of 637 is 7 x 7 x 13

Prime Factorization of 21 is 3 x 7

Prime Factorization of 189 is 3 x 3 x 3 x 7

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(488, 637) = 310856

GCD(488, 637) = ( 488 x 637 ) / 310856

GCD(488, 637) = 310856 / 310856

GCD(488, 637) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 189

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

LCM(1, 189) = 189

GCD(1, 189) = ( 1 x 189 ) / 189

GCD(1, 189) = 189 / 189

GCD(1, 189) = 1

GCD of 488, 637, 21, 189 is 1

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• GCD of 821, 504, 48, 275
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1. What is the GCD of 488, 637, 21, 189?

GCD of 488, 637, 21, 189 is 1

2. Where do I get the detailed procedure to find GCD of 488, 637, 21, 189?

You can find a detailed procedure to find GCD of 488, 637, 21, 189 on our page.

3. How to find GCD of 488, 637, 21, 189 on a calculator?

You can find the GCD of 488, 637, 21, 189 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.