GCD of 991, 360, 28, 647 Calculator

Given Input numbers are 991, 360, 28, 647

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

Divisors of 991 :

The positive integer divisors of 991 that completely divides 991 are.

1, 991

Divisors of 360 :

The positive integer divisors of 360 that completely divides 360 are.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360

Divisors of 28 :

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

1, 2, 4, 7, 14, 28

Divisors of 647 :

The positive integer divisors of 647 that completely divides 647 are.

1, 647

GCD of numbers is the greatest common divisor

So, the GCD (991, 360, 28, 647) = 1.

Given numbers are 991, 360, 28, 647

The list of prime factors of all numbers are

Prime factors of 991 are 991

Prime factors of 360 are 2 x 2 x 2 x 3 x 3 x 5

Prime factors of 28 are 2 x 2 x 7

Prime factors of 647 are 647

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

Given numbers are 991, 360, 28, 647

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

Apply this formula for all numbers.

Step1:

LCM(991, 360) = 356760

GCD(991, 360) = ( 991 x 360 ) / 356760

= 991 / 360

= 991

Step2:

LCM(1, 28) = 28

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

= 1 / 28

= 1

Step3:

LCM(1, 647) = 647

GCD(1, 647) = ( 1 x 647 ) / 647

= 1 / 647

= 1

So, Greatest Common Divisor of 991, 360, 28, 647 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 248, 926, 90, 807
• GCD of 343, 283, 51, 390
• GCD of 251, 697, 37, 399
• GCD of 245, 963, 15, 733
• GCD of 419, 754, 48, 243

Given numbers are 991, 360, 28, 647
The greatest common divisor of numbers 991, 360, 28, 647 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 991, 360, 28, 647 is 1.

1. What is the GCD of 991, 360, 28, 647?

GCD of given numbers 991, 360, 28, 647 is 1

2. How to calculate the greatest common divisor of 991, 360, 28, 647?

We can find the highest common divisor of 991, 360, 28, 647 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 991, 360, 28, 647 i.e 1.

3. How can I use the GCD of 991, 360, 28, 647Calculator?

Out the numbers 991, 360, 28, 647 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.