GCD of 390, 503, 21, 536 Calculator

Given Input numbers are 390, 503, 21, 536

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

Divisors of 390

List of positive integer divisors of 390 that divides 390 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 503

List of positive integer divisors of 503 that divides 503 without a remainder.

1, 503

Divisors of 21

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

1, 3, 7, 21

Divisors of 536

List of positive integer divisors of 536 that divides 536 without a remainder.

1, 2, 4, 8, 67, 134, 268, 536

Greatest Common Divisior

We found the divisors of 390, 503, 21, 536 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 390, 503, 21, 536 is 1.

Therefore, GCD of numbers 390, 503, 21, 536 is 1

Given Input Data is 390, 503, 21, 536

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

Prime Factorization of 390 is 2 x 3 x 5 x 13

Prime Factorization of 503 is 503

Prime Factorization of 21 is 3 x 7

Prime Factorization of 536 is 2 x 2 x 2 x 67

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(390, 503) = 196170

GCD(390, 503) = ( 390 x 503 ) / 196170

GCD(390, 503) = 196170 / 196170

GCD(390, 503) = 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 536

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

LCM(1, 536) = 536

GCD(1, 536) = ( 1 x 536 ) / 536

GCD(1, 536) = 536 / 536

GCD(1, 536) = 1

GCD of 390, 503, 21, 536 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 556, 644, 79, 614
• GCD of 279, 800, 92, 343
• GCD of 484, 155, 69, 760
• GCD of 588, 528, 46, 567
• GCD of 645, 950, 23, 830

1. What is the GCD of 390, 503, 21, 536?

GCD of 390, 503, 21, 536 is 1

2. Where do I get the detailed procedure to find GCD of 390, 503, 21, 536?

You can find a detailed procedure to find GCD of 390, 503, 21, 536 on our page.

3. How to find GCD of 390, 503, 21, 536 on a calculator?

You can find the GCD of 390, 503, 21, 536 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.