GCD of 649, 620, 420, 764 Calculator

Given Input numbers are 649, 620, 420, 764

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

Divisors of 649 :

The positive integer divisors of 649 that completely divides 649 are.

1, 11, 59, 649

Divisors of 620 :

The positive integer divisors of 620 that completely divides 620 are.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

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 764 :

The positive integer divisors of 764 that completely divides 764 are.

1, 2, 4, 191, 382, 764

GCD of numbers is the greatest common divisor

So, the GCD (649, 620, 420, 764) = 1.

Given numbers are 649, 620, 420, 764

The list of prime factors of all numbers are

Prime factors of 649 are 11 x 59

Prime factors of 620 are 2 x 2 x 5 x 31

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

Prime factors of 764 are 2 x 2 x 191

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 649, 620, 420, 764

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

Apply this formula for all numbers.

Step1:

LCM(649, 620) = 402380

GCD(649, 620) = ( 649 x 620 ) / 402380

= 649 / 620

= 649

Step2:

LCM(1, 420) = 420

GCD(1, 420) = ( 1 x 420 ) / 420

= 1 / 420

= 1

Step3:

LCM(1, 764) = 764

GCD(1, 764) = ( 1 x 764 ) / 764

= 1 / 764

= 1

So, Greatest Common Divisor of 649, 620, 420, 764 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 953, 647, 485, 631
• GCD of 787, 772, 567, 365
• GCD of 253, 365, 767, 226
• GCD of 181, 252, 705, 839
• GCD of 715, 867, 966, 108

Given numbers are 649, 620, 420, 764
The greatest common divisor of numbers 649, 620, 420, 764 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 649, 620, 420, 764 is 1.

1. What is the GCD of 649, 620, 420, 764?

GCD of given numbers 649, 620, 420, 764 is 1

2. How to calculate the greatest common divisor of 649, 620, 420, 764?

We can find the highest common divisor of 649, 620, 420, 764 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 649, 620, 420, 764 i.e 1.

3. How can I use the GCD of 649, 620, 420, 764Calculator?

Out the numbers 649, 620, 420, 764 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.