GCD of 644, 328, 90, 439 Calculator

Given Input numbers are 644, 328, 90, 439

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

Divisors of 644

List of positive integer divisors of 644 that divides 644 without a remainder.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

Divisors of 328

List of positive integer divisors of 328 that divides 328 without a remainder.

1, 2, 4, 8, 41, 82, 164, 328

Divisors of 90

List of positive integer divisors of 90 that divides 90 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Divisors of 439

List of positive integer divisors of 439 that divides 439 without a remainder.

1, 439

Greatest Common Divisior

We found the divisors of 644, 328, 90, 439 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 644, 328, 90, 439 is 1.

Therefore, GCD of numbers 644, 328, 90, 439 is 1

Given Input Data is 644, 328, 90, 439

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

Prime Factorization of 644 is 2 x 2 x 7 x 23

Prime Factorization of 328 is 2 x 2 x 2 x 41

Prime Factorization of 90 is 2 x 3 x 3 x 5

Prime Factorization of 439 is 439

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(644, 328) = 52808

GCD(644, 328) = ( 644 x 328 ) / 52808

GCD(644, 328) = 211232 / 52808

GCD(644, 328) = 4

Step2:

Here we consider the GCD from the above i.e. 4 as first number and the next as 90

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

LCM(4, 90) = 180

GCD(4, 90) = ( 4 x 90 ) / 180

GCD(4, 90) = 360 / 180

GCD(4, 90) = 2

Step3:

Here we consider the GCD from the above i.e. 2 as first number and the next as 439

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

LCM(2, 439) = 878

GCD(2, 439) = ( 2 x 439 ) / 878

GCD(2, 439) = 878 / 878

GCD(2, 439) = 1

GCD of 644, 328, 90, 439 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 172, 583, 31, 185
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• GCD of 220, 205, 47, 961
• GCD of 545, 898, 88, 336
• GCD of 110, 967, 95, 526

1. What is the GCD of 644, 328, 90, 439?

GCD of 644, 328, 90, 439 is 1

2. Where do I get the detailed procedure to find GCD of 644, 328, 90, 439?

You can find a detailed procedure to find GCD of 644, 328, 90, 439 on our page.

3. How to find GCD of 644, 328, 90, 439 on a calculator?

You can find the GCD of 644, 328, 90, 439 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.