GCD of 561, 132, 489, 640 Calculator

Given Input numbers are 561, 132, 489, 640

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 132 :

The positive integer divisors of 132 that completely divides 132 are.

1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132

Divisors of 489 :

The positive integer divisors of 489 that completely divides 489 are.

1, 3, 163, 489

Divisors of 640 :

The positive integer divisors of 640 that completely divides 640 are.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

GCD of numbers is the greatest common divisor

So, the GCD (561, 132, 489, 640) = 1.

Given numbers are 561, 132, 489, 640

The list of prime factors of all numbers are

Prime factors of 561 are 3 x 11 x 17

Prime factors of 132 are 2 x 2 x 3 x 11

Prime factors of 489 are 3 x 163

Prime factors of 640 are 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

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

Given numbers are 561, 132, 489, 640

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

Apply this formula for all numbers.

Step1:

LCM(561, 132) = 2244

GCD(561, 132) = ( 561 x 132 ) / 2244

= 561 / 132

= 561

Step2:

LCM(33, 489) = 5379

GCD(33, 489) = ( 33 x 489 ) / 5379

= 33 / 489

= 33

Step3:

LCM(3, 640) = 1920

GCD(3, 640) = ( 3 x 640 ) / 1920

= 3 / 640

= 3

So, Greatest Common Divisor of 561, 132, 489, 640 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 118, 738, 314, 206
• GCD of 415, 617, 737, 242
• GCD of 177, 260, 101, 929
• GCD of 453, 473, 754, 849
• GCD of 921, 877, 539, 505

Given numbers are 561, 132, 489, 640
The greatest common divisor of numbers 561, 132, 489, 640 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 561, 132, 489, 640 is 1.

1. What is the GCD of 561, 132, 489, 640?

GCD of given numbers 561, 132, 489, 640 is 1

2. How to calculate the greatest common divisor of 561, 132, 489, 640?

We can find the highest common divisor of 561, 132, 489, 640 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, 132, 489, 640 i.e 1.

3. How can I use the GCD of 561, 132, 489, 640Calculator?

Out the numbers 561, 132, 489, 640 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.