GCD of 356, 790, 18, 621 Calculator

Given Input numbers are 356, 790, 18, 621

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

Divisors of 356

List of positive integer divisors of 356 that divides 356 without a remainder.

1, 2, 4, 89, 178, 356

Divisors of 790

List of positive integer divisors of 790 that divides 790 without a remainder.

1, 2, 5, 10, 79, 158, 395, 790

Divisors of 18

List of positive integer divisors of 18 that divides 18 without a remainder.

1, 2, 3, 6, 9, 18

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Greatest Common Divisior

We found the divisors of 356, 790, 18, 621 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 356, 790, 18, 621 is 1.

Therefore, GCD of numbers 356, 790, 18, 621 is 1

Given Input Data is 356, 790, 18, 621

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

Prime Factorization of 356 is 2 x 2 x 89

Prime Factorization of 790 is 2 x 5 x 79

Prime Factorization of 18 is 2 x 3 x 3

Prime Factorization of 621 is 3 x 3 x 3 x 23

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(356, 790) = 140620

GCD(356, 790) = ( 356 x 790 ) / 140620

GCD(356, 790) = 281240 / 140620

GCD(356, 790) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 18

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

LCM(2, 18) = 18

GCD(2, 18) = ( 2 x 18 ) / 18

GCD(2, 18) = 36 / 18

GCD(2, 18) = 2

Step3:

Here we consider the GCD from the above i.e. 2 as first number and the next as 621

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

LCM(2, 621) = 1242

GCD(2, 621) = ( 2 x 621 ) / 1242

GCD(2, 621) = 1242 / 1242

GCD(2, 621) = 1

GCD of 356, 790, 18, 621 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 124, 771, 37, 496
• GCD of 145, 238, 32, 151
• GCD of 864, 685, 98, 800
• GCD of 420, 580, 30, 708
• GCD of 505, 747, 88, 322

1. What is the GCD of 356, 790, 18, 621?

GCD of 356, 790, 18, 621 is 1

2. Where do I get the detailed procedure to find GCD of 356, 790, 18, 621?

You can find a detailed procedure to find GCD of 356, 790, 18, 621 on our page.

3. How to find GCD of 356, 790, 18, 621 on a calculator?

You can find the GCD of 356, 790, 18, 621 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.