GCD of 638, 564, 764, 221 Calculator

Given Input numbers are 638, 564, 764, 221

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

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 564 :

The positive integer divisors of 564 that completely divides 564 are.

1, 2, 3, 4, 6, 12, 47, 94, 141, 188, 282, 564

Divisors of 764 :

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

1, 2, 4, 191, 382, 764

Divisors of 221 :

The positive integer divisors of 221 that completely divides 221 are.

1, 13, 17, 221

GCD of numbers is the greatest common divisor

So, the GCD (638, 564, 764, 221) = 1.

Given numbers are 638, 564, 764, 221

The list of prime factors of all numbers are

Prime factors of 638 are 2 x 11 x 29

Prime factors of 564 are 2 x 2 x 3 x 47

Prime factors of 764 are 2 x 2 x 191

Prime factors of 221 are 13 x 17

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

Given numbers are 638, 564, 764, 221

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

Apply this formula for all numbers.

Step1:

LCM(638, 564) = 179916

GCD(638, 564) = ( 638 x 564 ) / 179916

= 638 / 564

= 638

Step2:

LCM(2, 764) = 764

GCD(2, 764) = ( 2 x 764 ) / 764

= 2 / 764

= 2

Step3:

LCM(2, 221) = 442

GCD(2, 221) = ( 2 x 221 ) / 442

= 2 / 221

= 2

So, Greatest Common Divisor of 638, 564, 764, 221 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 642, 122, 411, 323
• GCD of 921, 600, 239, 535
• GCD of 940, 985, 115, 906
• GCD of 412, 237, 116, 764
• GCD of 477, 981, 808, 994

Given numbers are 638, 564, 764, 221
The greatest common divisor of numbers 638, 564, 764, 221 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 638, 564, 764, 221 is 1.

1. What is the GCD of 638, 564, 764, 221?

GCD of given numbers 638, 564, 764, 221 is 1

2. How to calculate the greatest common divisor of 638, 564, 764, 221?

We can find the highest common divisor of 638, 564, 764, 221 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 638, 564, 764, 221 i.e 1.

3. How can I use the GCD of 638, 564, 764, 221Calculator?

Out the numbers 638, 564, 764, 221 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.