GCD of 155, 820, 44, 220 Calculator

Given Input numbers are 155, 820, 44, 220

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

Divisors of 155

List of positive integer divisors of 155 that divides 155 without a remainder.

1, 5, 31, 155

Divisors of 820

List of positive integer divisors of 820 that divides 820 without a remainder.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Divisors of 44

List of positive integer divisors of 44 that divides 44 without a remainder.

1, 2, 4, 11, 22, 44

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 155, 820, 44, 220 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 155, 820, 44, 220 is 1.

Therefore, GCD of numbers 155, 820, 44, 220 is 1

Given Input Data is 155, 820, 44, 220

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

Prime Factorization of 155 is 5 x 31

Prime Factorization of 820 is 2 x 2 x 5 x 41

Prime Factorization of 44 is 2 x 2 x 11

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(155, 820) = 25420

GCD(155, 820) = ( 155 x 820 ) / 25420

GCD(155, 820) = 127100 / 25420

GCD(155, 820) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 44

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

LCM(5, 44) = 220

GCD(5, 44) = ( 5 x 44 ) / 220

GCD(5, 44) = 220 / 220

GCD(5, 44) = 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 155, 820, 44, 220 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 209, 139, 12, 798
• GCD of 274, 223, 14, 816
• GCD of 742, 898, 60, 464
• GCD of 417, 738, 12, 649
• GCD of 772, 937, 48, 866

1. What is the GCD of 155, 820, 44, 220?

GCD of 155, 820, 44, 220 is 1

2. Where do I get the detailed procedure to find GCD of 155, 820, 44, 220?

You can find a detailed procedure to find GCD of 155, 820, 44, 220 on our page.

3. How to find GCD of 155, 820, 44, 220 on a calculator?

You can find the GCD of 155, 820, 44, 220 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.