GCD of 649, 164, 620, 621 Calculator

Given Input numbers are 649, 164, 620, 621

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 164 :

The positive integer divisors of 164 that completely divides 164 are.

1, 2, 4, 41, 82, 164

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 621 :

The positive integer divisors of 621 that completely divides 621 are.

1, 3, 9, 23, 27, 69, 207, 621

GCD of numbers is the greatest common divisor

So, the GCD (649, 164, 620, 621) = 1.

Given numbers are 649, 164, 620, 621

The list of prime factors of all numbers are

Prime factors of 649 are 11 x 59

Prime factors of 164 are 2 x 2 x 41

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

Prime factors of 621 are 3 x 3 x 3 x 23

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

Given numbers are 649, 164, 620, 621

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

Apply this formula for all numbers.

Step1:

LCM(649, 164) = 106436

GCD(649, 164) = ( 649 x 164 ) / 106436

= 649 / 164

= 649

Step2:

LCM(1, 620) = 620

GCD(1, 620) = ( 1 x 620 ) / 620

= 1 / 620

= 1

Step3:

LCM(1, 621) = 621

GCD(1, 621) = ( 1 x 621 ) / 621

= 1 / 621

= 1

So, Greatest Common Divisor of 649, 164, 620, 621 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 220, 117, 251, 652
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• GCD of 942, 734, 147, 274
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• GCD of 991, 809, 447, 180

Given numbers are 649, 164, 620, 621
The greatest common divisor of numbers 649, 164, 620, 621 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 649, 164, 620, 621 is 1.

1. What is the GCD of 649, 164, 620, 621?

GCD of given numbers 649, 164, 620, 621 is 1

2. How to calculate the greatest common divisor of 649, 164, 620, 621?

We can find the highest common divisor of 649, 164, 620, 621 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, 164, 620, 621 i.e 1.

3. How can I use the GCD of 649, 164, 620, 621Calculator?

Out the numbers 649, 164, 620, 621 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.