GCD of 686, 646, 694, 856 Calculator

Given Input numbers are 686, 646, 694, 856

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

Divisors of 686 :

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

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

Divisors of 646 :

The positive integer divisors of 646 that completely divides 646 are.

1, 2, 17, 19, 34, 38, 323, 646

Divisors of 694 :

The positive integer divisors of 694 that completely divides 694 are.

1, 2, 347, 694

Divisors of 856 :

The positive integer divisors of 856 that completely divides 856 are.

1, 2, 4, 8, 107, 214, 428, 856

GCD of numbers is the greatest common divisor

So, the GCD (686, 646, 694, 856) = 2.

Given numbers are 686, 646, 694, 856

The list of prime factors of all numbers are

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

Prime factors of 646 are 2 x 17 x 19

Prime factors of 694 are 2 x 347

Prime factors of 856 are 2 x 2 x 2 x 107

The highest common occurrence is 2¹

Therefore, GCD of 686, 646, 694, 856 is 2.

Given numbers are 686, 646, 694, 856

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

Apply this formula for all numbers.

Step1:

LCM(686, 646) = 221578

GCD(686, 646) = ( 686 x 646 ) / 221578

= 686 / 646

= 686

Step2:

LCM(2, 694) = 694

GCD(2, 694) = ( 2 x 694 ) / 694

= 2 / 694

= 2

Step3:

LCM(2, 856) = 856

GCD(2, 856) = ( 2 x 856 ) / 856

= 2 / 856

= 2

So, Greatest Common Divisor of 686, 646, 694, 856 is 2

Here are some samples of GCD of Numbers calculations.

• GCD of 108, 127, 608, 260
• GCD of 794, 491, 815, 288
• GCD of 272, 202, 804, 160
• GCD of 757, 124, 483, 217
• GCD of 618, 507, 513, 932

Given numbers are 686, 646, 694, 856
The greatest common divisor of numbers 686, 646, 694, 856 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 686, 646, 694, 856 is 2.

1. What is the GCD of 686, 646, 694, 856?

GCD of given numbers 686, 646, 694, 856 is 2

2. How to calculate the greatest common divisor of 686, 646, 694, 856?

We can find the highest common divisor of 686, 646, 694, 856 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 686, 646, 694, 856 i.e 2.

3. How can I use the GCD of 686, 646, 694, 856Calculator?

Out the numbers 686, 646, 694, 856 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.