GCD of 687, 361, 401, 390 Calculator

Given Input numbers are 687, 361, 401, 390

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 361 :

The positive integer divisors of 361 that completely divides 361 are.

1, 19, 361

Divisors of 401 :

The positive integer divisors of 401 that completely divides 401 are.

1, 401

Divisors of 390 :

The positive integer divisors of 390 that completely divides 390 are.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

GCD of numbers is the greatest common divisor

So, the GCD (687, 361, 401, 390) = 1.

Given numbers are 687, 361, 401, 390

The list of prime factors of all numbers are

Prime factors of 687 are 3 x 229

Prime factors of 361 are 19 x 19

Prime factors of 401 are 401

Prime factors of 390 are 2 x 3 x 5 x 13

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

Given numbers are 687, 361, 401, 390

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

Apply this formula for all numbers.

Step1:

LCM(687, 361) = 248007

GCD(687, 361) = ( 687 x 361 ) / 248007

= 687 / 361

= 687

Step2:

LCM(1, 401) = 401

GCD(1, 401) = ( 1 x 401 ) / 401

= 1 / 401

= 1

Step3:

LCM(1, 390) = 390

GCD(1, 390) = ( 1 x 390 ) / 390

= 1 / 390

= 1

So, Greatest Common Divisor of 687, 361, 401, 390 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 974, 387, 914, 432
• GCD of 550, 920, 156, 905
• GCD of 377, 500, 486, 888
• GCD of 744, 404, 964, 156
• GCD of 534, 549, 614, 547

Given numbers are 687, 361, 401, 390
The greatest common divisor of numbers 687, 361, 401, 390 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 687, 361, 401, 390 is 1.

1. What is the GCD of 687, 361, 401, 390?

GCD of given numbers 687, 361, 401, 390 is 1

2. How to calculate the greatest common divisor of 687, 361, 401, 390?

We can find the highest common divisor of 687, 361, 401, 390 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, 361, 401, 390 i.e 1.

3. How can I use the GCD of 687, 361, 401, 390Calculator?

Out the numbers 687, 361, 401, 390 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.