GCD of 561, 720, 770, 210 Calculator

Given Input numbers are 561, 720, 770, 210

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 720 :

The positive integer divisors of 720 that completely divides 720 are.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

Divisors of 770 :

The positive integer divisors of 770 that completely divides 770 are.

1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770

Divisors of 210 :

The positive integer divisors of 210 that completely divides 210 are.

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210

GCD of numbers is the greatest common divisor

So, the GCD (561, 720, 770, 210) = 1.

Given numbers are 561, 720, 770, 210

The list of prime factors of all numbers are

Prime factors of 561 are 3 x 11 x 17

Prime factors of 720 are 2 x 2 x 2 x 2 x 3 x 3 x 5

Prime factors of 770 are 2 x 5 x 7 x 11

Prime factors of 210 are 2 x 3 x 5 x 7

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

Given numbers are 561, 720, 770, 210

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

Apply this formula for all numbers.

Step1:

LCM(561, 720) = 134640

GCD(561, 720) = ( 561 x 720 ) / 134640

= 561 / 720

= 561

Step2:

LCM(3, 770) = 2310

GCD(3, 770) = ( 3 x 770 ) / 2310

= 3 / 770

= 3

Step3:

LCM(1, 210) = 210

GCD(1, 210) = ( 1 x 210 ) / 210

= 1 / 210

= 1

So, Greatest Common Divisor of 561, 720, 770, 210 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 241, 474, 771, 770
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Given numbers are 561, 720, 770, 210
The greatest common divisor of numbers 561, 720, 770, 210 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 561, 720, 770, 210 is 1.

1. What is the GCD of 561, 720, 770, 210?

GCD of given numbers 561, 720, 770, 210 is 1

2. How to calculate the greatest common divisor of 561, 720, 770, 210?

We can find the highest common divisor of 561, 720, 770, 210 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, 720, 770, 210 i.e 1.

3. How can I use the GCD of 561, 720, 770, 210Calculator?

Out the numbers 561, 720, 770, 210 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.