GCD of 644, 477, 665, 438 Calculator

Given Input numbers are 644, 477, 665, 438

In the factoring method, we have to find the divisors of all numbers

Divisors of 644 :

The positive integer divisors of 644 that completely divides 644 are.

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

Divisors of 477 :

The positive integer divisors of 477 that completely divides 477 are.

1, 3, 9, 53, 159, 477

Divisors of 665 :

The positive integer divisors of 665 that completely divides 665 are.

1, 5, 7, 19, 35, 95, 133, 665

Divisors of 438 :

The positive integer divisors of 438 that completely divides 438 are.

1, 2, 3, 6, 73, 146, 219, 438

GCD of numbers is the greatest common divisor

So, the GCD (644, 477, 665, 438) = 1.

Given numbers are 644, 477, 665, 438

The list of prime factors of all numbers are

Prime factors of 644 are 2 x 2 x 7 x 23

Prime factors of 477 are 3 x 3 x 53

Prime factors of 665 are 5 x 7 x 19

Prime factors of 438 are 2 x 3 x 73

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 644, 477, 665, 438

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(644, 477) = 307188

GCD(644, 477) = ( 644 x 477 ) / 307188

= 644 / 477

= 644

Step2:

LCM(1, 665) = 665

GCD(1, 665) = ( 1 x 665 ) / 665

= 1 / 665

= 1

Step3:

LCM(1, 438) = 438

GCD(1, 438) = ( 1 x 438 ) / 438

= 1 / 438

= 1

So, Greatest Common Divisor of 644, 477, 665, 438 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 785, 380, 584, 424
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Given numbers are 644, 477, 665, 438
The greatest common divisor of numbers 644, 477, 665, 438 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 644, 477, 665, 438 is 1.

1. What is the GCD of 644, 477, 665, 438?

GCD of given numbers 644, 477, 665, 438 is 1

2. How to calculate the greatest common divisor of 644, 477, 665, 438?

We can find the highest common divisor of 644, 477, 665, 438 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 644, 477, 665, 438 i.e 1.

3. How can I use the GCD of 644, 477, 665, 438Calculator?

Out the numbers 644, 477, 665, 438 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.