GCD of 20, 647, 527, 280 Calculator

Given Input numbers are 20, 647, 527, 280

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 647

List of positive integer divisors of 647 that divides 647 without a remainder.

1, 647

Divisors of 527

List of positive integer divisors of 527 that divides 527 without a remainder.

1, 17, 31, 527

Divisors of 280

List of positive integer divisors of 280 that divides 280 without a remainder.

1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280

Greatest Common Divisior

We found the divisors of 20, 647, 527, 280 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 20, 647, 527, 280 is 1.

Therefore, GCD of numbers 20, 647, 527, 280 is 1

Given Input Data is 20, 647, 527, 280

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 647 is 647

Prime Factorization of 527 is 17 x 31

Prime Factorization of 280 is 2 x 2 x 2 x 5 x 7

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

Step1:

Let's calculate the GCD of first two numbers

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

LCM(20, 647) = 12940

GCD(20, 647) = ( 20 x 647 ) / 12940

GCD(20, 647) = 12940 / 12940

GCD(20, 647) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 527

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

LCM(1, 527) = 527

GCD(1, 527) = ( 1 x 527 ) / 527

GCD(1, 527) = 527 / 527

GCD(1, 527) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 280

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

LCM(1, 280) = 280

GCD(1, 280) = ( 1 x 280 ) / 280

GCD(1, 280) = 280 / 280

GCD(1, 280) = 1

GCD of 20, 647, 527, 280 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 60, 870, 479, 877
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• GCD of 37, 432, 842, 499
• GCD of 24, 745, 546, 573

1. What is the GCD of 20, 647, 527, 280?

GCD of 20, 647, 527, 280 is 1

2. Where do I get the detailed procedure to find GCD of 20, 647, 527, 280?

You can find a detailed procedure to find GCD of 20, 647, 527, 280 on our page.

3. How to find GCD of 20, 647, 527, 280 on a calculator?

You can find the GCD of 20, 647, 527, 280 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.