GCD of 561, 562, 687, 991 Calculator

Given Input numbers are 561, 562, 687, 991

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 562 :

The positive integer divisors of 562 that completely divides 562 are.

1, 2, 281, 562

Divisors of 687 :

The positive integer divisors of 687 that completely divides 687 are.

1, 3, 229, 687

Divisors of 991 :

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

1, 991

GCD of numbers is the greatest common divisor

So, the GCD (561, 562, 687, 991) = 1.

Given numbers are 561, 562, 687, 991

The list of prime factors of all numbers are

Prime factors of 561 are 3 x 11 x 17

Prime factors of 562 are 2 x 281

Prime factors of 687 are 3 x 229

Prime factors of 991 are 991

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

Given numbers are 561, 562, 687, 991

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

Apply this formula for all numbers.

Step1:

LCM(561, 562) = 315282

GCD(561, 562) = ( 561 x 562 ) / 315282

= 561 / 562

= 561

Step2:

LCM(1, 687) = 687

GCD(1, 687) = ( 1 x 687 ) / 687

= 1 / 687

= 1

Step3:

LCM(1, 991) = 991

GCD(1, 991) = ( 1 x 991 ) / 991

= 1 / 991

= 1

So, Greatest Common Divisor of 561, 562, 687, 991 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 323, 478, 200, 674
• GCD of 212, 187, 597, 435
• GCD of 344, 137, 416, 122
• GCD of 390, 126, 895, 901
• GCD of 825, 874, 144, 632

Given numbers are 561, 562, 687, 991
The greatest common divisor of numbers 561, 562, 687, 991 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 561, 562, 687, 991 is 1.

1. What is the GCD of 561, 562, 687, 991?

GCD of given numbers 561, 562, 687, 991 is 1

2. How to calculate the greatest common divisor of 561, 562, 687, 991?

We can find the highest common divisor of 561, 562, 687, 991 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, 562, 687, 991 i.e 1.

3. How can I use the GCD of 561, 562, 687, 991Calculator?

Out the numbers 561, 562, 687, 991 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.