GCD of 22, 21, 87 Calculator

Given Input numbers are 22, 21, 87

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

Divisors of 22

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

1, 2, 11, 22

Divisors of 21

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

1, 3, 7, 21

Divisors of 87

List of positive integer divisors of 87 that divides 87 without a remainder.

1, 3, 29, 87

Greatest Common Divisior

We found the divisors of 22, 21, 87 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 22, 21, 87 is 1.

Therefore, GCD of numbers 22, 21, 87 is 1

Given Input Data is 22, 21, 87

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

Prime Factorization of 22 is 2 x 11

Prime Factorization of 21 is 3 x 7

Prime Factorization of 87 is 3 x 29

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(22, 21) = 462

GCD(22, 21) = ( 22 x 21 ) / 462

GCD(22, 21) = 462 / 462

GCD(22, 21) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 87

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

LCM(1, 87) = 87

GCD(1, 87) = ( 1 x 87 ) / 87

GCD(1, 87) = 87 / 87

GCD(1, 87) = 1

GCD of 22, 21, 87 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 81, 58, 13
• GCD of 36, 30, 97
• GCD of 31, 32, 41
• GCD of 42, 18, 93
• GCD of 45, 27, 74

1. What is the GCD of 22, 21, 87?

GCD of 22, 21, 87 is 1

2. Where do I get the detailed procedure to find GCD of 22, 21, 87?

You can find a detailed procedure to find GCD of 22, 21, 87 on our page.

3. How to find GCD of 22, 21, 87 on a calculator?

You can find the GCD of 22, 21, 87 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.