GCD of 981, 355, 772, 638 Calculator

Given Input numbers are 981, 355, 772, 638

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

Divisors of 981 :

The positive integer divisors of 981 that completely divides 981 are.

1, 3, 9, 109, 327, 981

Divisors of 355 :

The positive integer divisors of 355 that completely divides 355 are.

1, 5, 71, 355

Divisors of 772 :

The positive integer divisors of 772 that completely divides 772 are.

1, 2, 4, 193, 386, 772

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

GCD of numbers is the greatest common divisor

So, the GCD (981, 355, 772, 638) = 1.

Given numbers are 981, 355, 772, 638

The list of prime factors of all numbers are

Prime factors of 981 are 3 x 3 x 109

Prime factors of 355 are 5 x 71

Prime factors of 772 are 2 x 2 x 193

Prime factors of 638 are 2 x 11 x 29

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

Given numbers are 981, 355, 772, 638

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

Apply this formula for all numbers.

Step1:

LCM(981, 355) = 348255

GCD(981, 355) = ( 981 x 355 ) / 348255

= 981 / 355

= 981

Step2:

LCM(1, 772) = 772

GCD(1, 772) = ( 1 x 772 ) / 772

= 1 / 772

= 1

Step3:

LCM(1, 638) = 638

GCD(1, 638) = ( 1 x 638 ) / 638

= 1 / 638

= 1

So, Greatest Common Divisor of 981, 355, 772, 638 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 887, 513, 891, 271
• GCD of 910, 635, 286, 328
• GCD of 220, 271, 252, 743
• GCD of 733, 133, 764, 237
• GCD of 887, 483, 276, 537

Given numbers are 981, 355, 772, 638
The greatest common divisor of numbers 981, 355, 772, 638 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 981, 355, 772, 638 is 1.

1. What is the GCD of 981, 355, 772, 638?

GCD of given numbers 981, 355, 772, 638 is 1

2. How to calculate the greatest common divisor of 981, 355, 772, 638?

We can find the highest common divisor of 981, 355, 772, 638 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 981, 355, 772, 638 i.e 1.

3. How can I use the GCD of 981, 355, 772, 638Calculator?

Out the numbers 981, 355, 772, 638 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.