GCD of 387, 391, 845, 728 Calculator

Given Input numbers are 387, 391, 845, 728

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

Divisors of 387 :

The positive integer divisors of 387 that completely divides 387 are.

1, 3, 9, 43, 129, 387

Divisors of 391 :

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

1, 17, 23, 391

Divisors of 845 :

The positive integer divisors of 845 that completely divides 845 are.

1, 5, 13, 65, 169, 845

Divisors of 728 :

The positive integer divisors of 728 that completely divides 728 are.

1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728

GCD of numbers is the greatest common divisor

So, the GCD (387, 391, 845, 728) = 1.

Given numbers are 387, 391, 845, 728

The list of prime factors of all numbers are

Prime factors of 387 are 3 x 3 x 43

Prime factors of 391 are 17 x 23

Prime factors of 845 are 5 x 13 x 13

Prime factors of 728 are 2 x 2 x 2 x 7 x 13

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

Given numbers are 387, 391, 845, 728

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

Apply this formula for all numbers.

Step1:

LCM(387, 391) = 151317

GCD(387, 391) = ( 387 x 391 ) / 151317

= 387 / 391

= 387

Step2:

LCM(1, 845) = 845

GCD(1, 845) = ( 1 x 845 ) / 845

= 1 / 845

= 1

Step3:

LCM(1, 728) = 728

GCD(1, 728) = ( 1 x 728 ) / 728

= 1 / 728

= 1

So, Greatest Common Divisor of 387, 391, 845, 728 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 695, 607, 779, 781
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Given numbers are 387, 391, 845, 728
The greatest common divisor of numbers 387, 391, 845, 728 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 387, 391, 845, 728 is 1.

1. What is the GCD of 387, 391, 845, 728?

GCD of given numbers 387, 391, 845, 728 is 1

2. How to calculate the greatest common divisor of 387, 391, 845, 728?

We can find the highest common divisor of 387, 391, 845, 728 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 387, 391, 845, 728 i.e 1.

3. How can I use the GCD of 387, 391, 845, 728Calculator?

Out the numbers 387, 391, 845, 728 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.