GCD of 449, 890, 21, 388 Calculator

Given Input numbers are 449, 890, 21, 388

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

Divisors of 449

List of positive integer divisors of 449 that divides 449 without a remainder.

1, 449

Divisors of 890

List of positive integer divisors of 890 that divides 890 without a remainder.

1, 2, 5, 10, 89, 178, 445, 890

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 388

List of positive integer divisors of 388 that divides 388 without a remainder.

1, 2, 4, 97, 194, 388

Greatest Common Divisior

We found the divisors of 449, 890, 21, 388 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 449, 890, 21, 388 is 1.

Therefore, GCD of numbers 449, 890, 21, 388 is 1

Given Input Data is 449, 890, 21, 388

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

Prime Factorization of 449 is 449

Prime Factorization of 890 is 2 x 5 x 89

Prime Factorization of 21 is 3 x 7

Prime Factorization of 388 is 2 x 2 x 97

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(449, 890) = 399610

GCD(449, 890) = ( 449 x 890 ) / 399610

GCD(449, 890) = 399610 / 399610

GCD(449, 890) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 388

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

LCM(1, 388) = 388

GCD(1, 388) = ( 1 x 388 ) / 388

GCD(1, 388) = 388 / 388

GCD(1, 388) = 1

GCD of 449, 890, 21, 388 is 1

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• GCD of 767, 152, 52, 405
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• GCD of 216, 819, 66, 801

1. What is the GCD of 449, 890, 21, 388?

GCD of 449, 890, 21, 388 is 1

2. Where do I get the detailed procedure to find GCD of 449, 890, 21, 388?

You can find a detailed procedure to find GCD of 449, 890, 21, 388 on our page.

3. How to find GCD of 449, 890, 21, 388 on a calculator?

You can find the GCD of 449, 890, 21, 388 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.