GCD of 620, 217, 870 Calculator

Given Input numbers are 620, 217, 870

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

Divisors of 620

List of positive integer divisors of 620 that divides 620 without a remainder.

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

Divisors of 217

List of positive integer divisors of 217 that divides 217 without a remainder.

1, 7, 31, 217

Divisors of 870

List of positive integer divisors of 870 that divides 870 without a remainder.

1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870

Greatest Common Divisior

We found the divisors of 620, 217, 870 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 620, 217, 870 is 1.

Therefore, GCD of numbers 620, 217, 870 is 1

Given Input Data is 620, 217, 870

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

Prime Factorization of 620 is 2 x 2 x 5 x 31

Prime Factorization of 217 is 7 x 31

Prime Factorization of 870 is 2 x 3 x 5 x 29

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(620, 217) = 4340

GCD(620, 217) = ( 620 x 217 ) / 4340

GCD(620, 217) = 134540 / 4340

GCD(620, 217) = 31

Step2:

Here we consider the GCD from the above i.e. 31 as first number and the next as 870

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

LCM(31, 870) = 26970

GCD(31, 870) = ( 31 x 870 ) / 26970

GCD(31, 870) = 26970 / 26970

GCD(31, 870) = 1

GCD of 620, 217, 870 is 1

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1. What is the GCD of 620, 217, 870?

GCD of 620, 217, 870 is 1

2. Where do I get the detailed procedure to find GCD of 620, 217, 870?

You can find a detailed procedure to find GCD of 620, 217, 870 on our page.

3. How to find GCD of 620, 217, 870 on a calculator?

You can find the GCD of 620, 217, 870 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.