GCD of 648, 856, 18, 981 Calculator

Given Input numbers are 648, 856, 18, 981

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

Divisors of 648 :

The positive integer divisors of 648 that completely divides 648 are.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648

Divisors of 856 :

The positive integer divisors of 856 that completely divides 856 are.

1, 2, 4, 8, 107, 214, 428, 856

Divisors of 18 :

The positive integer divisors of 18 that completely divides 18 are.

1, 2, 3, 6, 9, 18

Divisors of 981 :

The positive integer divisors of 981 that completely divides 981 are.

1, 3, 9, 109, 327, 981

GCD of numbers is the greatest common divisor

So, the GCD (648, 856, 18, 981) = 1.

Given numbers are 648, 856, 18, 981

The list of prime factors of all numbers are

Prime factors of 648 are 2 x 2 x 2 x 3 x 3 x 3 x 3

Prime factors of 856 are 2 x 2 x 2 x 107

Prime factors of 18 are 2 x 3 x 3

Prime factors of 981 are 3 x 3 x 109

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

Given numbers are 648, 856, 18, 981

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

Apply this formula for all numbers.

Step1:

LCM(648, 856) = 69336

GCD(648, 856) = ( 648 x 856 ) / 69336

= 648 / 856

= 648

Step2:

LCM(8, 18) = 72

GCD(8, 18) = ( 8 x 18 ) / 72

= 8 / 18

= 8

Step3:

LCM(2, 981) = 1962

GCD(2, 981) = ( 2 x 981 ) / 1962

= 2 / 981

= 2

So, Greatest Common Divisor of 648, 856, 18, 981 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 169, 311, 19, 951
• GCD of 818, 727, 26, 866
• GCD of 512, 123, 19, 422
• GCD of 980, 663, 93, 866
• GCD of 980, 395, 81, 969

Given numbers are 648, 856, 18, 981
The greatest common divisor of numbers 648, 856, 18, 981 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 648, 856, 18, 981 is 1.

1. What is the GCD of 648, 856, 18, 981?

GCD of given numbers 648, 856, 18, 981 is 1

2. How to calculate the greatest common divisor of 648, 856, 18, 981?

We can find the highest common divisor of 648, 856, 18, 981 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 648, 856, 18, 981 i.e 1.

3. How can I use the GCD of 648, 856, 18, 981Calculator?

Out the numbers 648, 856, 18, 981 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.