GCD of 644, 534, 420, 788 Calculator

Given Input numbers are 644, 534, 420, 788

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

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 534 :

The positive integer divisors of 534 that completely divides 534 are.

1, 2, 3, 6, 89, 178, 267, 534

Divisors of 420 :

The positive integer divisors of 420 that completely divides 420 are.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

Divisors of 788 :

The positive integer divisors of 788 that completely divides 788 are.

1, 2, 4, 197, 394, 788

GCD of numbers is the greatest common divisor

So, the GCD (644, 534, 420, 788) = 2.

Given numbers are 644, 534, 420, 788

The list of prime factors of all numbers are

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

Prime factors of 534 are 2 x 3 x 89

Prime factors of 420 are 2 x 2 x 3 x 5 x 7

Prime factors of 788 are 2 x 2 x 197

The highest common occurrence is 2¹

Therefore, GCD of 644, 534, 420, 788 is 2.

Given numbers are 644, 534, 420, 788

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

Apply this formula for all numbers.

Step1:

LCM(644, 534) = 171948

GCD(644, 534) = ( 644 x 534 ) / 171948

= 644 / 534

= 644

Step2:

LCM(2, 420) = 420

GCD(2, 420) = ( 2 x 420 ) / 420

= 2 / 420

= 2

Step3:

LCM(2, 788) = 788

GCD(2, 788) = ( 2 x 788 ) / 788

= 2 / 788

= 2

So, Greatest Common Divisor of 644, 534, 420, 788 is 2

Here are some samples of GCD of Numbers calculations.

• GCD of 937, 981, 767, 832
• GCD of 198, 526, 172, 930
• GCD of 553, 876, 411, 932
• GCD of 992, 761, 187, 752
• GCD of 268, 654, 709, 938

Given numbers are 644, 534, 420, 788
The greatest common divisor of numbers 644, 534, 420, 788 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 644, 534, 420, 788 is 2.

1. What is the GCD of 644, 534, 420, 788?

GCD of given numbers 644, 534, 420, 788 is 2

2. How to calculate the greatest common divisor of 644, 534, 420, 788?

We can find the highest common divisor of 644, 534, 420, 788 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 644, 534, 420, 788 i.e 2.

3. How can I use the GCD of 644, 534, 420, 788Calculator?

Out the numbers 644, 534, 420, 788 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.