GCD of 645, 116, 20, 328 Calculator

Given Input numbers are 645, 116, 20, 328

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

Divisors of 645 :

The positive integer divisors of 645 that completely divides 645 are.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 116 :

The positive integer divisors of 116 that completely divides 116 are.

1, 2, 4, 29, 58, 116

Divisors of 20 :

The positive integer divisors of 20 that completely divides 20 are.

1, 2, 4, 5, 10, 20

Divisors of 328 :

The positive integer divisors of 328 that completely divides 328 are.

1, 2, 4, 8, 41, 82, 164, 328

GCD of numbers is the greatest common divisor

So, the GCD (645, 116, 20, 328) = 1.

Given numbers are 645, 116, 20, 328

The list of prime factors of all numbers are

Prime factors of 645 are 3 x 5 x 43

Prime factors of 116 are 2 x 2 x 29

Prime factors of 20 are 2 x 2 x 5

Prime factors of 328 are 2 x 2 x 2 x 41

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

Given numbers are 645, 116, 20, 328

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

Apply this formula for all numbers.

Step1:

LCM(645, 116) = 74820

GCD(645, 116) = ( 645 x 116 ) / 74820

= 645 / 116

= 645

Step2:

LCM(1, 20) = 20

GCD(1, 20) = ( 1 x 20 ) / 20

= 1 / 20

= 1

Step3:

LCM(1, 328) = 328

GCD(1, 328) = ( 1 x 328 ) / 328

= 1 / 328

= 1

So, Greatest Common Divisor of 645, 116, 20, 328 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 719, 655, 11, 118
• GCD of 511, 545, 10, 778
• GCD of 856, 638, 97, 265
• GCD of 429, 391, 37, 398
• GCD of 805, 313, 82, 602

Given numbers are 645, 116, 20, 328
The greatest common divisor of numbers 645, 116, 20, 328 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 645, 116, 20, 328 is 1.

1. What is the GCD of 645, 116, 20, 328?

GCD of given numbers 645, 116, 20, 328 is 1

2. How to calculate the greatest common divisor of 645, 116, 20, 328?

We can find the highest common divisor of 645, 116, 20, 328 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 645, 116, 20, 328 i.e 1.

3. How can I use the GCD of 645, 116, 20, 328Calculator?

Out the numbers 645, 116, 20, 328 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.