GCD of 820, 644, 168, 812 Calculator

Given Input numbers are 820, 644, 168, 812

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

Divisors of 820 :

The positive integer divisors of 820 that completely divides 820 are.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Divisors of 644 :

The positive integer divisors of 644 that completely divides 644 are.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

Divisors of 168 :

The positive integer divisors of 168 that completely divides 168 are.

1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168

Divisors of 812 :

The positive integer divisors of 812 that completely divides 812 are.

1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812

GCD of numbers is the greatest common divisor

So, the GCD (820, 644, 168, 812) = 4.

Given numbers are 820, 644, 168, 812

The list of prime factors of all numbers are

Prime factors of 820 are 2 x 2 x 5 x 41

Prime factors of 644 are 2 x 2 x 7 x 23

Prime factors of 168 are 2 x 2 x 2 x 3 x 7

Prime factors of 812 are 2 x 2 x 7 x 29

The highest common occurrence is 2²

Therefore, GCD of 820, 644, 168, 812 is 4.

Given numbers are 820, 644, 168, 812

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

Apply this formula for all numbers.

Step1:

LCM(820, 644) = 132020

GCD(820, 644) = ( 820 x 644 ) / 132020

= 820 / 644

= 820

Step2:

LCM(4, 168) = 168

GCD(4, 168) = ( 4 x 168 ) / 168

= 4 / 168

= 4

Step3:

LCM(4, 812) = 812

GCD(4, 812) = ( 4 x 812 ) / 812

= 4 / 812

= 4

So, Greatest Common Divisor of 820, 644, 168, 812 is 4

Here are some samples of GCD of Numbers calculations.

• GCD of 704, 968, 626, 779
• GCD of 352, 871, 763, 673
• GCD of 949, 585, 795, 428
• GCD of 250, 737, 755, 208
• GCD of 881, 897, 205, 798

Given numbers are 820, 644, 168, 812
The greatest common divisor of numbers 820, 644, 168, 812 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 820, 644, 168, 812 is 4.

1. What is the GCD of 820, 644, 168, 812?

GCD of given numbers 820, 644, 168, 812 is 4

2. How to calculate the greatest common divisor of 820, 644, 168, 812?

We can find the highest common divisor of 820, 644, 168, 812 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 820, 644, 168, 812 i.e 4.

3. How can I use the GCD of 820, 644, 168, 812Calculator?

Out the numbers 820, 644, 168, 812 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.