GCD of 16, 35, 21 Calculator

Given Input numbers are 16, 35, 21

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

Divisors of 16

List of positive integer divisors of 16 that divides 16 without a remainder.

1, 2, 4, 8, 16

Divisors of 35

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

1, 5, 7, 35

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Greatest Common Divisior

We found the divisors of 16, 35, 21 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 16, 35, 21 is 1.

Therefore, GCD of numbers 16, 35, 21 is 1

Given Input Data is 16, 35, 21

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

Prime Factorization of 16 is 2 x 2 x 2 x 2

Prime Factorization of 35 is 5 x 7

Prime Factorization of 21 is 3 x 7

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(16, 35) = 560

GCD(16, 35) = ( 16 x 35 ) / 560

GCD(16, 35) = 560 / 560

GCD(16, 35) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

GCD of 16, 35, 21 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 59, 38, 89
• GCD of 26, 84, 70
• GCD of 76, 61, 84
• GCD of 88, 73, 49
• GCD of 53, 41, 96

1. What is the GCD of 16, 35, 21?

GCD of 16, 35, 21 is 1

2. Where do I get the detailed procedure to find GCD of 16, 35, 21?

You can find a detailed procedure to find GCD of 16, 35, 21 on our page.

3. How to find GCD of 16, 35, 21 on a calculator?

You can find the GCD of 16, 35, 21 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.