GCD of 438, 520, 807, 780 Calculator

Given Input numbers are 438, 520, 807, 780

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

Divisors of 438

List of positive integer divisors of 438 that divides 438 without a remainder.

1, 2, 3, 6, 73, 146, 219, 438

Divisors of 520

List of positive integer divisors of 520 that divides 520 without a remainder.

1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520

Divisors of 807

List of positive integer divisors of 807 that divides 807 without a remainder.

1, 3, 269, 807

Divisors of 780

List of positive integer divisors of 780 that divides 780 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

Greatest Common Divisior

We found the divisors of 438, 520, 807, 780 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 438, 520, 807, 780 is 1.

Therefore, GCD of numbers 438, 520, 807, 780 is 1

Given Input Data is 438, 520, 807, 780

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

Prime Factorization of 438 is 2 x 3 x 73

Prime Factorization of 520 is 2 x 2 x 2 x 5 x 13

Prime Factorization of 807 is 3 x 269

Prime Factorization of 780 is 2 x 2 x 3 x 5 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(438, 520) = 113880

GCD(438, 520) = ( 438 x 520 ) / 113880

GCD(438, 520) = 227760 / 113880

GCD(438, 520) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 807

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

LCM(2, 807) = 1614

GCD(2, 807) = ( 2 x 807 ) / 1614

GCD(2, 807) = 1614 / 1614

GCD(2, 807) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 780

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

LCM(1, 780) = 780

GCD(1, 780) = ( 1 x 780 ) / 780

GCD(1, 780) = 780 / 780

GCD(1, 780) = 1

GCD of 438, 520, 807, 780 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 541, 962, 844, 352
• GCD of 891, 903, 234, 154
• GCD of 996, 962, 593, 785
• GCD of 242, 918, 101, 819
• GCD of 430, 172, 887, 416

1. What is the GCD of 438, 520, 807, 780?

GCD of 438, 520, 807, 780 is 1

2. Where do I get the detailed procedure to find GCD of 438, 520, 807, 780?

You can find a detailed procedure to find GCD of 438, 520, 807, 780 on our page.

3. How to find GCD of 438, 520, 807, 780 on a calculator?

You can find the GCD of 438, 520, 807, 780 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.