GCD of 156, 204, 805, 220 Calculator

Given Input numbers are 156, 204, 805, 220

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

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

Divisors of 204

List of positive integer divisors of 204 that divides 204 without a remainder.

1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204

Divisors of 805

List of positive integer divisors of 805 that divides 805 without a remainder.

1, 5, 7, 23, 35, 115, 161, 805

Divisors of 220

List of positive integer divisors of 220 that divides 220 without a remainder.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

Greatest Common Divisior

We found the divisors of 156, 204, 805, 220 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 156, 204, 805, 220 is 1.

Therefore, GCD of numbers 156, 204, 805, 220 is 1

Given Input Data is 156, 204, 805, 220

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

Prime Factorization of 156 is 2 x 2 x 3 x 13

Prime Factorization of 204 is 2 x 2 x 3 x 17

Prime Factorization of 805 is 5 x 7 x 23

Prime Factorization of 220 is 2 x 2 x 5 x 11

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(156, 204) = 2652

GCD(156, 204) = ( 156 x 204 ) / 2652

GCD(156, 204) = 31824 / 2652

GCD(156, 204) = 12

Step2:

Here we consider the GCD from the above i.e. 12 as first number and the next as 805

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

LCM(12, 805) = 9660

GCD(12, 805) = ( 12 x 805 ) / 9660

GCD(12, 805) = 9660 / 9660

GCD(12, 805) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 220

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

LCM(1, 220) = 220

GCD(1, 220) = ( 1 x 220 ) / 220

GCD(1, 220) = 220 / 220

GCD(1, 220) = 1

GCD of 156, 204, 805, 220 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 421, 961, 963, 328
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• GCD of 838, 394, 355, 219
• GCD of 118, 610, 197, 407

1. What is the GCD of 156, 204, 805, 220?

GCD of 156, 204, 805, 220 is 1

2. Where do I get the detailed procedure to find GCD of 156, 204, 805, 220?

You can find a detailed procedure to find GCD of 156, 204, 805, 220 on our page.

3. How to find GCD of 156, 204, 805, 220 on a calculator?

You can find the GCD of 156, 204, 805, 220 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.