GCD of 399, 636, 20, 146 Calculator

Given Input numbers are 399, 636, 20, 146

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

Divisors of 399

List of positive integer divisors of 399 that divides 399 without a remainder.

1, 3, 7, 19, 21, 57, 133, 399

Divisors of 636

List of positive integer divisors of 636 that divides 636 without a remainder.

1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636

Divisors of 20

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

1, 2, 4, 5, 10, 20

Divisors of 146

List of positive integer divisors of 146 that divides 146 without a remainder.

1, 2, 73, 146

Greatest Common Divisior

We found the divisors of 399, 636, 20, 146 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 399, 636, 20, 146 is 1.

Therefore, GCD of numbers 399, 636, 20, 146 is 1

Given Input Data is 399, 636, 20, 146

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

Prime Factorization of 399 is 3 x 7 x 19

Prime Factorization of 636 is 2 x 2 x 3 x 53

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 146 is 2 x 73

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(399, 636) = 84588

GCD(399, 636) = ( 399 x 636 ) / 84588

GCD(399, 636) = 253764 / 84588

GCD(399, 636) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 20

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

LCM(3, 20) = 60

GCD(3, 20) = ( 3 x 20 ) / 60

GCD(3, 20) = 60 / 60

GCD(3, 20) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 146

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

LCM(1, 146) = 146

GCD(1, 146) = ( 1 x 146 ) / 146

GCD(1, 146) = 146 / 146

GCD(1, 146) = 1

GCD of 399, 636, 20, 146 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 408, 628, 51, 885
• GCD of 185, 200, 55, 988
• GCD of 520, 183, 96, 392
• GCD of 672, 186, 87, 801
• GCD of 816, 451, 58, 491

1. What is the GCD of 399, 636, 20, 146?

GCD of 399, 636, 20, 146 is 1

2. Where do I get the detailed procedure to find GCD of 399, 636, 20, 146?

You can find a detailed procedure to find GCD of 399, 636, 20, 146 on our page.

3. How to find GCD of 399, 636, 20, 146 on a calculator?

You can find the GCD of 399, 636, 20, 146 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.