GCD of 419, 815, 20, 156 Calculator

Given Input numbers are 419, 815, 20, 156

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

Divisors of 419

List of positive integer divisors of 419 that divides 419 without a remainder.

1, 419

Divisors of 815

List of positive integer divisors of 815 that divides 815 without a remainder.

1, 5, 163, 815

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 156

List of positive integer divisors of 156 that divides 156 without a remainder.

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156

Greatest Common Divisior

We found the divisors of 419, 815, 20, 156 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 419, 815, 20, 156 is 1.

Therefore, GCD of numbers 419, 815, 20, 156 is 1

Given Input Data is 419, 815, 20, 156

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

Prime Factorization of 419 is 419

Prime Factorization of 815 is 5 x 163

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 156 is 2 x 2 x 3 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(419, 815) = 341485

GCD(419, 815) = ( 419 x 815 ) / 341485

GCD(419, 815) = 341485 / 341485

GCD(419, 815) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 20

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

LCM(1, 20) = 20

GCD(1, 20) = ( 1 x 20 ) / 20

GCD(1, 20) = 20 / 20

GCD(1, 20) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 156

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

LCM(1, 156) = 156

GCD(1, 156) = ( 1 x 156 ) / 156

GCD(1, 156) = 156 / 156

GCD(1, 156) = 1

GCD of 419, 815, 20, 156 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 533, 990, 31, 580
• GCD of 220, 113, 18, 497
• GCD of 207, 843, 90, 117
• GCD of 519, 900, 66, 404
• GCD of 524, 155, 16, 238

1. What is the GCD of 419, 815, 20, 156?

GCD of 419, 815, 20, 156 is 1

2. Where do I get the detailed procedure to find GCD of 419, 815, 20, 156?

You can find a detailed procedure to find GCD of 419, 815, 20, 156 on our page.

3. How to find GCD of 419, 815, 20, 156 on a calculator?

You can find the GCD of 419, 815, 20, 156 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.