GCD of 687, 921, 981, 380 Calculator

Given Input numbers are 687, 921, 981, 380

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

Divisors of 687 :

The positive integer divisors of 687 that completely divides 687 are.

1, 3, 229, 687

Divisors of 921 :

The positive integer divisors of 921 that completely divides 921 are.

1, 3, 307, 921

Divisors of 981 :

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

1, 3, 9, 109, 327, 981

Divisors of 380 :

The positive integer divisors of 380 that completely divides 380 are.

1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380

GCD of numbers is the greatest common divisor

So, the GCD (687, 921, 981, 380) = 1.

Given numbers are 687, 921, 981, 380

The list of prime factors of all numbers are

Prime factors of 687 are 3 x 229

Prime factors of 921 are 3 x 307

Prime factors of 981 are 3 x 3 x 109

Prime factors of 380 are 2 x 2 x 5 x 19

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

Given numbers are 687, 921, 981, 380

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

Apply this formula for all numbers.

Step1:

LCM(687, 921) = 210909

GCD(687, 921) = ( 687 x 921 ) / 210909

= 687 / 921

= 687

Step2:

LCM(3, 981) = 981

GCD(3, 981) = ( 3 x 981 ) / 981

= 3 / 981

= 3

Step3:

LCM(3, 380) = 1140

GCD(3, 380) = ( 3 x 380 ) / 1140

= 3 / 380

= 3

So, Greatest Common Divisor of 687, 921, 981, 380 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 124, 186, 614, 951
• GCD of 825, 439, 543, 957
• GCD of 367, 645, 145, 837
• GCD of 191, 648, 330, 643
• GCD of 294, 578, 622, 992

Given numbers are 687, 921, 981, 380
The greatest common divisor of numbers 687, 921, 981, 380 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 687, 921, 981, 380 is 1.

1. What is the GCD of 687, 921, 981, 380?

GCD of given numbers 687, 921, 981, 380 is 1

2. How to calculate the greatest common divisor of 687, 921, 981, 380?

We can find the highest common divisor of 687, 921, 981, 380 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 687, 921, 981, 380 i.e 1.

3. How can I use the GCD of 687, 921, 981, 380Calculator?

Out the numbers 687, 921, 981, 380 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.