GCD of 220, 391, 206, 447 Calculator

Given Input numbers are 220, 391, 206, 447

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

Divisors of 220

List of positive integer divisors of 220 that divides 220 without a remainder.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

Divisors of 391

List of positive integer divisors of 391 that divides 391 without a remainder.

1, 17, 23, 391

Divisors of 206

List of positive integer divisors of 206 that divides 206 without a remainder.

1, 2, 103, 206

Divisors of 447

List of positive integer divisors of 447 that divides 447 without a remainder.

1, 3, 149, 447

Greatest Common Divisior

We found the divisors of 220, 391, 206, 447 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 220, 391, 206, 447 is 1.

Therefore, GCD of numbers 220, 391, 206, 447 is 1

Given Input Data is 220, 391, 206, 447

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

Prime Factorization of 220 is 2 x 2 x 5 x 11

Prime Factorization of 391 is 17 x 23

Prime Factorization of 206 is 2 x 103

Prime Factorization of 447 is 3 x 149

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(220, 391) = 86020

GCD(220, 391) = ( 220 x 391 ) / 86020

GCD(220, 391) = 86020 / 86020

GCD(220, 391) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 206

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

LCM(1, 206) = 206

GCD(1, 206) = ( 1 x 206 ) / 206

GCD(1, 206) = 206 / 206

GCD(1, 206) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 447

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

LCM(1, 447) = 447

GCD(1, 447) = ( 1 x 447 ) / 447

GCD(1, 447) = 447 / 447

GCD(1, 447) = 1

GCD of 220, 391, 206, 447 is 1

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1. What is the GCD of 220, 391, 206, 447?

GCD of 220, 391, 206, 447 is 1

2. Where do I get the detailed procedure to find GCD of 220, 391, 206, 447?

You can find a detailed procedure to find GCD of 220, 391, 206, 447 on our page.

3. How to find GCD of 220, 391, 206, 447 on a calculator?

You can find the GCD of 220, 391, 206, 447 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.