GCD of 28, 86, 77 Calculator

Given Input numbers are 28, 86, 77

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

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

Divisors of 86

List of positive integer divisors of 86 that divides 86 without a remainder.

1, 2, 43, 86

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

Greatest Common Divisior

We found the divisors of 28, 86, 77 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 28, 86, 77 is 1.

Therefore, GCD of numbers 28, 86, 77 is 1

Given Input Data is 28, 86, 77

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

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 86 is 2 x 43

Prime Factorization of 77 is 7 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(28, 86) = 1204

GCD(28, 86) = ( 28 x 86 ) / 1204

GCD(28, 86) = 2408 / 1204

GCD(28, 86) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 77

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

LCM(2, 77) = 154

GCD(2, 77) = ( 2 x 77 ) / 154

GCD(2, 77) = 154 / 154

GCD(2, 77) = 1

GCD of 28, 86, 77 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 32, 78, 42
• GCD of 13, 96, 39
• GCD of 72, 44, 87
• GCD of 24, 80, 90
• GCD of 91, 54, 56

1. What is the GCD of 28, 86, 77?

GCD of 28, 86, 77 is 1

2. Where do I get the detailed procedure to find GCD of 28, 86, 77?

You can find a detailed procedure to find GCD of 28, 86, 77 on our page.

3. How to find GCD of 28, 86, 77 on a calculator?

You can find the GCD of 28, 86, 77 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.