GCD of 390, 121, 28, 891 Calculator

Given Input numbers are 390, 121, 28, 891

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

Divisors of 390 :

The positive integer divisors of 390 that completely divides 390 are.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 121 :

The positive integer divisors of 121 that completely divides 121 are.

1, 11, 121

Divisors of 28 :

The positive integer divisors of 28 that completely divides 28 are.

1, 2, 4, 7, 14, 28

Divisors of 891 :

The positive integer divisors of 891 that completely divides 891 are.

1, 3, 9, 11, 27, 33, 81, 99, 297, 891

GCD of numbers is the greatest common divisor

So, the GCD (390, 121, 28, 891) = 1.

Given numbers are 390, 121, 28, 891

The list of prime factors of all numbers are

Prime factors of 390 are 2 x 3 x 5 x 13

Prime factors of 121 are 11 x 11

Prime factors of 28 are 2 x 2 x 7

Prime factors of 891 are 3 x 3 x 3 x 3 x 11

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

Given numbers are 390, 121, 28, 891

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

Apply this formula for all numbers.

Step1:

LCM(390, 121) = 47190

GCD(390, 121) = ( 390 x 121 ) / 47190

= 390 / 121

= 390

Step2:

LCM(1, 28) = 28

GCD(1, 28) = ( 1 x 28 ) / 28

= 1 / 28

= 1

Step3:

LCM(1, 891) = 891

GCD(1, 891) = ( 1 x 891 ) / 891

= 1 / 891

= 1

So, Greatest Common Divisor of 390, 121, 28, 891 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 535, 962, 64, 707
• GCD of 671, 829, 13, 709
• GCD of 313, 726, 48, 830
• GCD of 762, 403, 88, 874
• GCD of 297, 579, 90, 971

Given numbers are 390, 121, 28, 891
The greatest common divisor of numbers 390, 121, 28, 891 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 390, 121, 28, 891 is 1.

1. What is the GCD of 390, 121, 28, 891?

GCD of given numbers 390, 121, 28, 891 is 1

2. How to calculate the greatest common divisor of 390, 121, 28, 891?

We can find the highest common divisor of 390, 121, 28, 891 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 390, 121, 28, 891 i.e 1.

3. How can I use the GCD of 390, 121, 28, 891Calculator?

Out the numbers 390, 121, 28, 891 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.