GCD of 561, 864, 671, 780 Calculator

Given Input numbers are 561, 864, 671, 780

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

Divisors of 561 :

The positive integer divisors of 561 that completely divides 561 are.

1, 3, 11, 17, 33, 51, 187, 561

Divisors of 864 :

The positive integer divisors of 864 that completely divides 864 are.

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 96, 108, 144, 216, 288, 432, 864

Divisors of 671 :

The positive integer divisors of 671 that completely divides 671 are.

1, 11, 61, 671

Divisors of 780 :

The positive integer divisors of 780 that completely divides 780 are.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

GCD of numbers is the greatest common divisor

So, the GCD (561, 864, 671, 780) = 1.

Given numbers are 561, 864, 671, 780

The list of prime factors of all numbers are

Prime factors of 561 are 3 x 11 x 17

Prime factors of 864 are 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3

Prime factors of 671 are 11 x 61

Prime factors of 780 are 2 x 2 x 3 x 5 x 13

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

Given numbers are 561, 864, 671, 780

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

Apply this formula for all numbers.

Step1:

LCM(561, 864) = 161568

GCD(561, 864) = ( 561 x 864 ) / 161568

= 561 / 864

= 561

Step2:

LCM(3, 671) = 2013

GCD(3, 671) = ( 3 x 671 ) / 2013

= 3 / 671

= 3

Step3:

LCM(1, 780) = 780

GCD(1, 780) = ( 1 x 780 ) / 780

= 1 / 780

= 1

So, Greatest Common Divisor of 561, 864, 671, 780 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 581, 624, 290, 236
• GCD of 310, 446, 908, 322
• GCD of 564, 576, 689, 774
• GCD of 787, 871, 729, 513
• GCD of 185, 706, 211, 247

Given numbers are 561, 864, 671, 780
The greatest common divisor of numbers 561, 864, 671, 780 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 561, 864, 671, 780 is 1.

1. What is the GCD of 561, 864, 671, 780?

GCD of given numbers 561, 864, 671, 780 is 1

2. How to calculate the greatest common divisor of 561, 864, 671, 780?

We can find the highest common divisor of 561, 864, 671, 780 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 561, 864, 671, 780 i.e 1.

3. How can I use the GCD of 561, 864, 671, 780Calculator?

Out the numbers 561, 864, 671, 780 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.