GCD of 680, 920, 102, 646 Calculator

Given Input numbers are 680, 920, 102, 646

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

Divisors of 680 :

The positive integer divisors of 680 that completely divides 680 are.

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680

Divisors of 920 :

The positive integer divisors of 920 that completely divides 920 are.

1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920

Divisors of 102 :

The positive integer divisors of 102 that completely divides 102 are.

1, 2, 3, 6, 17, 34, 51, 102

Divisors of 646 :

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

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

GCD of numbers is the greatest common divisor

So, the GCD (680, 920, 102, 646) = 2.

Given numbers are 680, 920, 102, 646

The list of prime factors of all numbers are

Prime factors of 680 are 2 x 2 x 2 x 5 x 17

Prime factors of 920 are 2 x 2 x 2 x 5 x 23

Prime factors of 102 are 2 x 3 x 17

Prime factors of 646 are 2 x 17 x 19

The highest common occurrence is 2¹

Therefore, GCD of 680, 920, 102, 646 is 2.

Given numbers are 680, 920, 102, 646

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

Apply this formula for all numbers.

Step1:

LCM(680, 920) = 15640

GCD(680, 920) = ( 680 x 920 ) / 15640

= 680 / 920

= 680

Step2:

LCM(40, 102) = 2040

GCD(40, 102) = ( 40 x 102 ) / 2040

= 40 / 102

= 40

Step3:

LCM(2, 646) = 646

GCD(2, 646) = ( 2 x 646 ) / 646

= 2 / 646

= 2

So, Greatest Common Divisor of 680, 920, 102, 646 is 2

Here are some samples of GCD of Numbers calculations.

• GCD of 668, 311, 447, 143
• GCD of 711, 737, 985, 569
• GCD of 142, 274, 920, 356
• GCD of 468, 864, 528, 465
• GCD of 983, 417, 154, 630

Given numbers are 680, 920, 102, 646
The greatest common divisor of numbers 680, 920, 102, 646 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 680, 920, 102, 646 is 2.

1. What is the GCD of 680, 920, 102, 646?

GCD of given numbers 680, 920, 102, 646 is 2

2. How to calculate the greatest common divisor of 680, 920, 102, 646?

We can find the highest common divisor of 680, 920, 102, 646 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 680, 920, 102, 646 i.e 2.

3. How can I use the GCD of 680, 920, 102, 646Calculator?

Out the numbers 680, 920, 102, 646 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.