GCD of 236, 645, 20 Calculator

Given Input numbers are 236, 645, 20

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

Divisors of 236

List of positive integer divisors of 236 that divides 236 without a remainder.

1, 2, 4, 59, 118, 236

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 20

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

1, 2, 4, 5, 10, 20

Greatest Common Divisior

We found the divisors of 236, 645, 20 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 236, 645, 20 is 1.

Therefore, GCD of numbers 236, 645, 20 is 1

Given Input Data is 236, 645, 20

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

Prime Factorization of 236 is 2 x 2 x 59

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 20 is 2 x 2 x 5

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(236, 645) = 152220

GCD(236, 645) = ( 236 x 645 ) / 152220

GCD(236, 645) = 152220 / 152220

GCD(236, 645) = 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

GCD of 236, 645, 20 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 255, 913, 56
• GCD of 278, 778, 94
• GCD of 122, 214, 61
• GCD of 145, 713, 72
• GCD of 618, 878, 98

1. What is the GCD of 236, 645, 20?

GCD of 236, 645, 20 is 1

2. Where do I get the detailed procedure to find GCD of 236, 645, 20?

You can find a detailed procedure to find GCD of 236, 645, 20 on our page.

3. How to find GCD of 236, 645, 20 on a calculator?

You can find the GCD of 236, 645, 20 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.