GCD of 685, 438, 987 Calculator

Given Input numbers are 685, 438, 987

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

Divisors of 685 :

The positive integer divisors of 685 that completely divides 685 are.

1, 5, 137, 685

Divisors of 438 :

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

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

Divisors of 987 :

The positive integer divisors of 987 that completely divides 987 are.

1, 3, 7, 21, 47, 141, 329, 987

GCD of numbers is the greatest common divisor

So, the GCD (685, 438, 987) = 1.

Given numbers are 685, 438, 987

The list of prime factors of all numbers are

Prime factors of 685 are 5 x 137

Prime factors of 438 are 2 x 3 x 73

Prime factors of 987 are 3 x 7 x 47

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

Given numbers are 685, 438, 987

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

Apply this formula for all numbers.

Step1:

LCM(685, 438) = 300030

GCD(685, 438) = ( 685 x 438 ) / 300030

= 685 / 438

= 685

Step2:

LCM(1, 987) = 987

GCD(1, 987) = ( 1 x 987 ) / 987

= 1 / 987

= 1

So, Greatest Common Divisor of 685, 438, 987 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 370, 822, 825
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Given numbers are 685, 438, 987
The greatest common divisor of numbers 685, 438, 987 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 685, 438, 987 is 1.

1. What is the GCD of 685, 438, 987?

GCD of given numbers 685, 438, 987 is 1

2. How to calculate the greatest common divisor of 685, 438, 987?

We can find the highest common divisor of 685, 438, 987 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 685, 438, 987 i.e 1.

3. How can I use the GCD of 685, 438, 987Calculator?

Out the numbers 685, 438, 987 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.