GCD of 720, 217, 781 Calculator

Given Input numbers are 720, 217, 781

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

Divisors of 720

List of positive integer divisors of 720 that divides 720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

Divisors of 217

List of positive integer divisors of 217 that divides 217 without a remainder.

1, 7, 31, 217

Divisors of 781

List of positive integer divisors of 781 that divides 781 without a remainder.

1, 11, 71, 781

Greatest Common Divisior

We found the divisors of 720, 217, 781 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 720, 217, 781 is 1.

Therefore, GCD of numbers 720, 217, 781 is 1

Given Input Data is 720, 217, 781

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

Prime Factorization of 720 is 2 x 2 x 2 x 2 x 3 x 3 x 5

Prime Factorization of 217 is 7 x 31

Prime Factorization of 781 is 11 x 71

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(720, 217) = 156240

GCD(720, 217) = ( 720 x 217 ) / 156240

GCD(720, 217) = 156240 / 156240

GCD(720, 217) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 781

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

LCM(1, 781) = 781

GCD(1, 781) = ( 1 x 781 ) / 781

GCD(1, 781) = 781 / 781

GCD(1, 781) = 1

GCD of 720, 217, 781 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 910, 637, 689
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1. What is the GCD of 720, 217, 781?

GCD of 720, 217, 781 is 1

2. Where do I get the detailed procedure to find GCD of 720, 217, 781?

You can find a detailed procedure to find GCD of 720, 217, 781 on our page.

3. How to find GCD of 720, 217, 781 on a calculator?

You can find the GCD of 720, 217, 781 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.