GCD of 978, 787, 391, 490 Calculator

Given Input numbers are 978, 787, 391, 490

In the factoring method, we have to find the divisors of all numbers

Divisors of 978 :

The positive integer divisors of 978 that completely divides 978 are.

1, 2, 3, 6, 163, 326, 489, 978

Divisors of 787 :

The positive integer divisors of 787 that completely divides 787 are.

1, 787

Divisors of 391 :

The positive integer divisors of 391 that completely divides 391 are.

1, 17, 23, 391

Divisors of 490 :

The positive integer divisors of 490 that completely divides 490 are.

1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490

GCD of numbers is the greatest common divisor

So, the GCD (978, 787, 391, 490) = 1.

Given numbers are 978, 787, 391, 490

The list of prime factors of all numbers are

Prime factors of 978 are 2 x 3 x 163

Prime factors of 787 are 787

Prime factors of 391 are 17 x 23

Prime factors of 490 are 2 x 5 x 7 x 7

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 978, 787, 391, 490

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(978, 787) = 769686

GCD(978, 787) = ( 978 x 787 ) / 769686

= 978 / 787

= 978

Step2:

LCM(1, 391) = 391

GCD(1, 391) = ( 1 x 391 ) / 391

= 1 / 391

= 1

Step3:

LCM(1, 490) = 490

GCD(1, 490) = ( 1 x 490 ) / 490

= 1 / 490

= 1

So, Greatest Common Divisor of 978, 787, 391, 490 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 113, 397, 824, 171
• GCD of 572, 600, 635, 726
• GCD of 898, 960, 532, 972
• GCD of 998, 118, 516, 414
• GCD of 992, 898, 430, 392

Given numbers are 978, 787, 391, 490
The greatest common divisor of numbers 978, 787, 391, 490 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 978, 787, 391, 490 is 1.

1. What is the GCD of 978, 787, 391, 490?

GCD of given numbers 978, 787, 391, 490 is 1

2. How to calculate the greatest common divisor of 978, 787, 391, 490?

We can find the highest common divisor of 978, 787, 391, 490 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 978, 787, 391, 490 i.e 1.

3. How can I use the GCD of 978, 787, 391, 490Calculator?

Out the numbers 978, 787, 391, 490 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.