GCD of 668, 820, 419, 728 Calculator

Given Input numbers are 668, 820, 419, 728

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

Divisors of 668

List of positive integer divisors of 668 that divides 668 without a remainder.

1, 2, 4, 167, 334, 668

Divisors of 820

List of positive integer divisors of 820 that divides 820 without a remainder.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Divisors of 419

List of positive integer divisors of 419 that divides 419 without a remainder.

1, 419

Divisors of 728

List of positive integer divisors of 728 that divides 728 without a remainder.

1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728

Greatest Common Divisior

We found the divisors of 668, 820, 419, 728 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 668, 820, 419, 728 is 1.

Therefore, GCD of numbers 668, 820, 419, 728 is 1

Given Input Data is 668, 820, 419, 728

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

Prime Factorization of 668 is 2 x 2 x 167

Prime Factorization of 820 is 2 x 2 x 5 x 41

Prime Factorization of 419 is 419

Prime Factorization of 728 is 2 x 2 x 2 x 7 x 13

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(668, 820) = 136940

GCD(668, 820) = ( 668 x 820 ) / 136940

GCD(668, 820) = 547760 / 136940

GCD(668, 820) = 4

Step2:

Here we consider the GCD from the above i.e. 4 as first number and the next as 419

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

LCM(4, 419) = 1676

GCD(4, 419) = ( 4 x 419 ) / 1676

GCD(4, 419) = 1676 / 1676

GCD(4, 419) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 728

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

LCM(1, 728) = 728

GCD(1, 728) = ( 1 x 728 ) / 728

GCD(1, 728) = 728 / 728

GCD(1, 728) = 1

GCD of 668, 820, 419, 728 is 1

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• GCD of 787, 888, 820, 346
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1. What is the GCD of 668, 820, 419, 728?

GCD of 668, 820, 419, 728 is 1

2. Where do I get the detailed procedure to find GCD of 668, 820, 419, 728?

You can find a detailed procedure to find GCD of 668, 820, 419, 728 on our page.

3. How to find GCD of 668, 820, 419, 728 on a calculator?

You can find the GCD of 668, 820, 419, 728 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.