GCD of 165, 780, 401, 686 Calculator

Given Input numbers are 165, 780, 401, 686

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

Divisors of 165 :

The positive integer divisors of 165 that completely divides 165 are.

1, 3, 5, 11, 15, 33, 55, 165

Divisors of 780 :

The positive integer divisors of 780 that completely divides 780 are.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

Divisors of 401 :

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

1, 401

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 (165, 780, 401, 686) = 1.

Given numbers are 165, 780, 401, 686

The list of prime factors of all numbers are

Prime factors of 165 are 3 x 5 x 11

Prime factors of 780 are 2 x 2 x 3 x 5 x 13

Prime factors of 401 are 401

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 165, 780, 401, 686

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

Apply this formula for all numbers.

Step1:

LCM(165, 780) = 8580

GCD(165, 780) = ( 165 x 780 ) / 8580

= 165 / 780

= 165

Step2:

LCM(15, 401) = 6015

GCD(15, 401) = ( 15 x 401 ) / 6015

= 15 / 401

= 15

Step3:

LCM(1, 686) = 686

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

= 1 / 686

= 1

So, Greatest Common Divisor of 165, 780, 401, 686 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 897, 177, 395, 131
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• GCD of 992, 236, 676, 286
• GCD of 624, 663, 649, 156
• GCD of 509, 928, 170, 846

Given numbers are 165, 780, 401, 686
The greatest common divisor of numbers 165, 780, 401, 686 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 165, 780, 401, 686 is 1.

1. What is the GCD of 165, 780, 401, 686?

GCD of given numbers 165, 780, 401, 686 is 1

2. How to calculate the greatest common divisor of 165, 780, 401, 686?

We can find the highest common divisor of 165, 780, 401, 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 165, 780, 401, 686 i.e 1.

3. How can I use the GCD of 165, 780, 401, 686Calculator?

Out the numbers 165, 780, 401, 686 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.