GCD of 687, 685, 790, 491 Calculator

Given Input numbers are 687, 685, 790, 491

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 685 :

The positive integer divisors of 685 that completely divides 685 are.

1, 5, 137, 685

Divisors of 790 :

The positive integer divisors of 790 that completely divides 790 are.

1, 2, 5, 10, 79, 158, 395, 790

Divisors of 491 :

The positive integer divisors of 491 that completely divides 491 are.

1, 491

GCD of numbers is the greatest common divisor

So, the GCD (687, 685, 790, 491) = 1.

Given numbers are 687, 685, 790, 491

The list of prime factors of all numbers are

Prime factors of 687 are 3 x 229

Prime factors of 685 are 5 x 137

Prime factors of 790 are 2 x 5 x 79

Prime factors of 491 are 491

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

Given numbers are 687, 685, 790, 491

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

Apply this formula for all numbers.

Step1:

LCM(687, 685) = 470595

GCD(687, 685) = ( 687 x 685 ) / 470595

= 687 / 685

= 687

Step2:

LCM(1, 790) = 790

GCD(1, 790) = ( 1 x 790 ) / 790

= 1 / 790

= 1

Step3:

LCM(1, 491) = 491

GCD(1, 491) = ( 1 x 491 ) / 491

= 1 / 491

= 1

So, Greatest Common Divisor of 687, 685, 790, 491 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 105, 567, 280, 318
• GCD of 479, 603, 600, 182
• GCD of 307, 464, 381, 561
• GCD of 650, 774, 910, 932
• GCD of 629, 800, 664, 596

Given numbers are 687, 685, 790, 491
The greatest common divisor of numbers 687, 685, 790, 491 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 687, 685, 790, 491 is 1.

1. What is the GCD of 687, 685, 790, 491?

GCD of given numbers 687, 685, 790, 491 is 1

2. How to calculate the greatest common divisor of 687, 685, 790, 491?

We can find the highest common divisor of 687, 685, 790, 491 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, 685, 790, 491 i.e 1.

3. How can I use the GCD of 687, 685, 790, 491Calculator?

Out the numbers 687, 685, 790, 491 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.