GCD of 65, 26, 47, 21 Calculator

Given Input numbers are 65, 26, 47, 21

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

Divisors of 65 :

The positive integer divisors of 65 that completely divides 65 are.

1, 5, 13, 65

Divisors of 26 :

The positive integer divisors of 26 that completely divides 26 are.

1, 2, 13, 26

Divisors of 47 :

The positive integer divisors of 47 that completely divides 47 are.

1, 47

Divisors of 21 :

The positive integer divisors of 21 that completely divides 21 are.

1, 3, 7, 21

GCD of numbers is the greatest common divisor

So, the GCD (65, 26, 47, 21) = 1.

Given numbers are 65, 26, 47, 21

The list of prime factors of all numbers are

Prime factors of 65 are 5 x 13

Prime factors of 26 are 2 x 13

Prime factors of 47 are 47

Prime factors of 21 are 3 x 7

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

Given numbers are 65, 26, 47, 21

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

Apply this formula for all numbers.

Step1:

LCM(65, 26) = 130

GCD(65, 26) = ( 65 x 26 ) / 130

= 65 / 26

= 65

Step2:

LCM(13, 47) = 611

GCD(13, 47) = ( 13 x 47 ) / 611

= 13 / 47

= 13

Step3:

LCM(1, 21) = 21

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

= 1 / 21

= 1

So, Greatest Common Divisor of 65, 26, 47, 21 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 36, 28, 25, 27
• GCD of 58, 37, 91, 29
• GCD of 99, 39, 94, 68
• GCD of 42, 45, 52, 73
• GCD of 52, 55, 81, 19

Given numbers are 65, 26, 47, 21
The greatest common divisor of numbers 65, 26, 47, 21 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 65, 26, 47, 21 is 1.

1. What is the GCD of 65, 26, 47, 21?

GCD of given numbers 65, 26, 47, 21 is 1

2. How to calculate the greatest common divisor of 65, 26, 47, 21?

We can find the highest common divisor of 65, 26, 47, 21 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 65, 26, 47, 21 i.e 1.

3. How can I use the GCD of 65, 26, 47, 21Calculator?

Out the numbers 65, 26, 47, 21 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.