GCD of 438, 638, 489, 978 Calculator

Given Input numbers are 438, 638, 489, 978

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

Divisors of 438 :

The positive integer divisors of 438 that completely divides 438 are.

1, 2, 3, 6, 73, 146, 219, 438

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 489 :

The positive integer divisors of 489 that completely divides 489 are.

1, 3, 163, 489

Divisors of 978 :

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

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

GCD of numbers is the greatest common divisor

So, the GCD (438, 638, 489, 978) = 1.

Given numbers are 438, 638, 489, 978

The list of prime factors of all numbers are

Prime factors of 438 are 2 x 3 x 73

Prime factors of 638 are 2 x 11 x 29

Prime factors of 489 are 3 x 163

Prime factors of 978 are 2 x 3 x 163

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

Given numbers are 438, 638, 489, 978

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

Apply this formula for all numbers.

Step1:

LCM(438, 638) = 139722

GCD(438, 638) = ( 438 x 638 ) / 139722

= 438 / 638

= 438

Step2:

LCM(2, 489) = 978

GCD(2, 489) = ( 2 x 489 ) / 978

= 2 / 489

= 2

Step3:

LCM(1, 978) = 978

GCD(1, 978) = ( 1 x 978 ) / 978

= 1 / 978

= 1

So, Greatest Common Divisor of 438, 638, 489, 978 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 596, 979, 130, 573
• GCD of 835, 949, 599, 478
• GCD of 351, 449, 618, 373
• GCD of 360, 922, 126, 913
• GCD of 196, 881, 408, 305

Given numbers are 438, 638, 489, 978
The greatest common divisor of numbers 438, 638, 489, 978 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 438, 638, 489, 978 is 1.

1. What is the GCD of 438, 638, 489, 978?

GCD of given numbers 438, 638, 489, 978 is 1

2. How to calculate the greatest common divisor of 438, 638, 489, 978?

We can find the highest common divisor of 438, 638, 489, 978 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 438, 638, 489, 978 i.e 1.

3. How can I use the GCD of 438, 638, 489, 978Calculator?

Out the numbers 438, 638, 489, 978 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.