GCD of 220, 690, 645, 747 Calculator

Given Input numbers are 220, 690, 645, 747

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

Divisors of 220 :

The positive integer divisors of 220 that completely divides 220 are.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

Divisors of 690 :

The positive integer divisors of 690 that completely divides 690 are.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

Divisors of 645 :

The positive integer divisors of 645 that completely divides 645 are.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 747 :

The positive integer divisors of 747 that completely divides 747 are.

1, 3, 9, 83, 249, 747

GCD of numbers is the greatest common divisor

So, the GCD (220, 690, 645, 747) = 1.

Given numbers are 220, 690, 645, 747

The list of prime factors of all numbers are

Prime factors of 220 are 2 x 2 x 5 x 11

Prime factors of 690 are 2 x 3 x 5 x 23

Prime factors of 645 are 3 x 5 x 43

Prime factors of 747 are 3 x 3 x 83

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

Given numbers are 220, 690, 645, 747

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

Apply this formula for all numbers.

Step1:

LCM(220, 690) = 15180

GCD(220, 690) = ( 220 x 690 ) / 15180

= 220 / 690

= 220

Step2:

LCM(10, 645) = 1290

GCD(10, 645) = ( 10 x 645 ) / 1290

= 10 / 645

= 10

Step3:

LCM(5, 747) = 3735

GCD(5, 747) = ( 5 x 747 ) / 3735

= 5 / 747

= 5

So, Greatest Common Divisor of 220, 690, 645, 747 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 315, 510, 641, 407
• GCD of 138, 990, 543, 547
• GCD of 173, 335, 128, 399
• GCD of 727, 163, 818, 132
• GCD of 490, 579, 547, 426

Given numbers are 220, 690, 645, 747
The greatest common divisor of numbers 220, 690, 645, 747 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 220, 690, 645, 747 is 1.

1. What is the GCD of 220, 690, 645, 747?

GCD of given numbers 220, 690, 645, 747 is 1

2. How to calculate the greatest common divisor of 220, 690, 645, 747?

We can find the highest common divisor of 220, 690, 645, 747 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 220, 690, 645, 747 i.e 1.

3. How can I use the GCD of 220, 690, 645, 747Calculator?

Out the numbers 220, 690, 645, 747 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.