GCD of 405, 331, 685, 686 Calculator

Given Input numbers are 405, 331, 685, 686

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

Divisors of 405 :

The positive integer divisors of 405 that completely divides 405 are.

1, 3, 5, 9, 15, 27, 45, 81, 135, 405

Divisors of 331 :

The positive integer divisors of 331 that completely divides 331 are.

1, 331

Divisors of 685 :

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

1, 5, 137, 685

Divisors of 686 :

The positive integer divisors of 686 that completely divides 686 are.

1, 2, 7, 14, 49, 98, 343, 686

GCD of numbers is the greatest common divisor

So, the GCD (405, 331, 685, 686) = 1.

Given numbers are 405, 331, 685, 686

The list of prime factors of all numbers are

Prime factors of 405 are 3 x 3 x 3 x 3 x 5

Prime factors of 331 are 331

Prime factors of 685 are 5 x 137

Prime factors of 686 are 2 x 7 x 7 x 7

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

Given numbers are 405, 331, 685, 686

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

Apply this formula for all numbers.

Step1:

LCM(405, 331) = 134055

GCD(405, 331) = ( 405 x 331 ) / 134055

= 405 / 331

= 405

Step2:

LCM(1, 685) = 685

GCD(1, 685) = ( 1 x 685 ) / 685

= 1 / 685

= 1

Step3:

LCM(1, 686) = 686

GCD(1, 686) = ( 1 x 686 ) / 686

= 1 / 686

= 1

So, Greatest Common Divisor of 405, 331, 685, 686 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 655, 525, 684, 551
• GCD of 547, 522, 215, 610
• GCD of 378, 823, 861, 950
• GCD of 814, 191, 406, 525
• GCD of 478, 829, 411, 774

Given numbers are 405, 331, 685, 686
The greatest common divisor of numbers 405, 331, 685, 686 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 405, 331, 685, 686 is 1.

1. What is the GCD of 405, 331, 685, 686?

GCD of given numbers 405, 331, 685, 686 is 1

2. How to calculate the greatest common divisor of 405, 331, 685, 686?

We can find the highest common divisor of 405, 331, 685, 686 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 405, 331, 685, 686 i.e 1.

3. How can I use the GCD of 405, 331, 685, 686Calculator?

Out the numbers 405, 331, 685, 686 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.