GCD of 261, 980, 390, 670 Calculator

Given Input numbers are 261, 980, 390, 670

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

Divisors of 261

List of positive integer divisors of 261 that divides 261 without a remainder.

1, 3, 9, 29, 87, 261

Divisors of 980

List of positive integer divisors of 980 that divides 980 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980

Divisors of 390

List of positive integer divisors of 390 that divides 390 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 670

List of positive integer divisors of 670 that divides 670 without a remainder.

1, 2, 5, 10, 67, 134, 335, 670

Greatest Common Divisior

We found the divisors of 261, 980, 390, 670 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 261, 980, 390, 670 is 1.

Therefore, GCD of numbers 261, 980, 390, 670 is 1

Given Input Data is 261, 980, 390, 670

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

Prime Factorization of 261 is 3 x 3 x 29

Prime Factorization of 980 is 2 x 2 x 5 x 7 x 7

Prime Factorization of 390 is 2 x 3 x 5 x 13

Prime Factorization of 670 is 2 x 5 x 67

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(261, 980) = 255780

GCD(261, 980) = ( 261 x 980 ) / 255780

GCD(261, 980) = 255780 / 255780

GCD(261, 980) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 390

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

LCM(1, 390) = 390

GCD(1, 390) = ( 1 x 390 ) / 390

GCD(1, 390) = 390 / 390

GCD(1, 390) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 670

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

LCM(1, 670) = 670

GCD(1, 670) = ( 1 x 670 ) / 670

GCD(1, 670) = 670 / 670

GCD(1, 670) = 1

GCD of 261, 980, 390, 670 is 1

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1. What is the GCD of 261, 980, 390, 670?

GCD of 261, 980, 390, 670 is 1

2. Where do I get the detailed procedure to find GCD of 261, 980, 390, 670?

You can find a detailed procedure to find GCD of 261, 980, 390, 670 on our page.

3. How to find GCD of 261, 980, 390, 670 on a calculator?

You can find the GCD of 261, 980, 390, 670 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.