GCD of 423, 728, 391, 828 Calculator

Given Input numbers are 423, 728, 391, 828

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

Divisors of 423 :

The positive integer divisors of 423 that completely divides 423 are.

1, 3, 9, 47, 141, 423

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

Divisors of 391 :

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

1, 17, 23, 391

Divisors of 828 :

The positive integer divisors of 828 that completely divides 828 are.

1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 828

GCD of numbers is the greatest common divisor

So, the GCD (423, 728, 391, 828) = 1.

Given numbers are 423, 728, 391, 828

The list of prime factors of all numbers are

Prime factors of 423 are 3 x 3 x 47

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

Prime factors of 391 are 17 x 23

Prime factors of 828 are 2 x 2 x 3 x 3 x 23

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

Given numbers are 423, 728, 391, 828

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

Apply this formula for all numbers.

Step1:

LCM(423, 728) = 307944

GCD(423, 728) = ( 423 x 728 ) / 307944

= 423 / 728

= 423

Step2:

LCM(1, 391) = 391

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

= 1 / 391

= 1

Step3:

LCM(1, 828) = 828

GCD(1, 828) = ( 1 x 828 ) / 828

= 1 / 828

= 1

So, Greatest Common Divisor of 423, 728, 391, 828 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 542, 533, 164, 143
• GCD of 631, 559, 496, 878
• GCD of 822, 352, 632, 290
• GCD of 652, 842, 398, 637
• GCD of 300, 864, 664, 953

Given numbers are 423, 728, 391, 828
The greatest common divisor of numbers 423, 728, 391, 828 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 423, 728, 391, 828 is 1.

1. What is the GCD of 423, 728, 391, 828?

GCD of given numbers 423, 728, 391, 828 is 1

2. How to calculate the greatest common divisor of 423, 728, 391, 828?

We can find the highest common divisor of 423, 728, 391, 828 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 423, 728, 391, 828 i.e 1.

3. How can I use the GCD of 423, 728, 391, 828Calculator?

Out the numbers 423, 728, 391, 828 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.