GCD of 45, 35, 39, 72 Calculator

Given Input numbers are 45, 35, 39, 72

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 45

List of positive integer divisors of 45 that divides 45 without a remainder.

1, 3, 5, 9, 15, 45

Divisors of 35

List of positive integer divisors of 35 that divides 35 without a remainder.

1, 5, 7, 35

Divisors of 39

List of positive integer divisors of 39 that divides 39 without a remainder.

1, 3, 13, 39

Divisors of 72

List of positive integer divisors of 72 that divides 72 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Greatest Common Divisior

We found the divisors of 45, 35, 39, 72 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 45, 35, 39, 72 is 1.

Therefore, GCD of numbers 45, 35, 39, 72 is 1

Given Input Data is 45, 35, 39, 72

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 45 is 3 x 3 x 5

Prime Factorization of 35 is 5 x 7

Prime Factorization of 39 is 3 x 13

Prime Factorization of 72 is 2 x 2 x 2 x 3 x 3

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

Step1:

Let's calculate the GCD of first two numbers

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

LCM(45, 35) = 315

GCD(45, 35) = ( 45 x 35 ) / 315

GCD(45, 35) = 1575 / 315

GCD(45, 35) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 39

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

LCM(5, 39) = 195

GCD(5, 39) = ( 5 x 39 ) / 195

GCD(5, 39) = 195 / 195

GCD(5, 39) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 72

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

LCM(1, 72) = 72

GCD(1, 72) = ( 1 x 72 ) / 72

GCD(1, 72) = 72 / 72

GCD(1, 72) = 1

GCD of 45, 35, 39, 72 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 84, 52, 10, 88
• GCD of 28, 30, 81, 42
• GCD of 99, 62, 33, 41
• GCD of 87, 46, 33, 25
• GCD of 58, 32, 61, 76

1. What is the GCD of 45, 35, 39, 72?

GCD of 45, 35, 39, 72 is 1

2. Where do I get the detailed procedure to find GCD of 45, 35, 39, 72?

You can find a detailed procedure to find GCD of 45, 35, 39, 72 on our page.

3. How to find GCD of 45, 35, 39, 72 on a calculator?

You can find the GCD of 45, 35, 39, 72 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.