GCD of 28, 631, 691, 649 Calculator

Given Input numbers are 28, 631, 691, 649

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

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

Divisors of 631

List of positive integer divisors of 631 that divides 631 without a remainder.

1, 631

Divisors of 691

List of positive integer divisors of 691 that divides 691 without a remainder.

1, 691

Divisors of 649

List of positive integer divisors of 649 that divides 649 without a remainder.

1, 11, 59, 649

Greatest Common Divisior

We found the divisors of 28, 631, 691, 649 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 28, 631, 691, 649 is 1.

Therefore, GCD of numbers 28, 631, 691, 649 is 1

Given Input Data is 28, 631, 691, 649

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

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 631 is 631

Prime Factorization of 691 is 691

Prime Factorization of 649 is 11 x 59

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(28, 631) = 17668

GCD(28, 631) = ( 28 x 631 ) / 17668

GCD(28, 631) = 17668 / 17668

GCD(28, 631) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 691

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

LCM(1, 691) = 691

GCD(1, 691) = ( 1 x 691 ) / 691

GCD(1, 691) = 691 / 691

GCD(1, 691) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 649

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

LCM(1, 649) = 649

GCD(1, 649) = ( 1 x 649 ) / 649

GCD(1, 649) = 649 / 649

GCD(1, 649) = 1

GCD of 28, 631, 691, 649 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 84, 325, 881, 490
• GCD of 49, 897, 934, 760
• GCD of 53, 180, 124, 246
• GCD of 11, 129, 591, 971
• GCD of 66, 624, 868, 958

1. What is the GCD of 28, 631, 691, 649?

GCD of 28, 631, 691, 649 is 1

2. Where do I get the detailed procedure to find GCD of 28, 631, 691, 649?

You can find a detailed procedure to find GCD of 28, 631, 691, 649 on our page.

3. How to find GCD of 28, 631, 691, 649 on a calculator?

You can find the GCD of 28, 631, 691, 649 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.