GCD of 356, 305, 21, 721 Calculator

Given Input numbers are 356, 305, 21, 721

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

Divisors of 356 :

The positive integer divisors of 356 that completely divides 356 are.

1, 2, 4, 89, 178, 356

Divisors of 305 :

The positive integer divisors of 305 that completely divides 305 are.

1, 5, 61, 305

Divisors of 21 :

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

1, 3, 7, 21

Divisors of 721 :

The positive integer divisors of 721 that completely divides 721 are.

1, 7, 103, 721

GCD of numbers is the greatest common divisor

So, the GCD (356, 305, 21, 721) = 1.

Given numbers are 356, 305, 21, 721

The list of prime factors of all numbers are

Prime factors of 356 are 2 x 2 x 89

Prime factors of 305 are 5 x 61

Prime factors of 21 are 3 x 7

Prime factors of 721 are 7 x 103

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

Given numbers are 356, 305, 21, 721

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

Apply this formula for all numbers.

Step1:

LCM(356, 305) = 108580

GCD(356, 305) = ( 356 x 305 ) / 108580

= 356 / 305

= 356

Step2:

LCM(1, 21) = 21

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

= 1 / 21

= 1

Step3:

LCM(1, 721) = 721

GCD(1, 721) = ( 1 x 721 ) / 721

= 1 / 721

= 1

So, Greatest Common Divisor of 356, 305, 21, 721 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 710, 121, 86, 548
• GCD of 241, 592, 81, 711
• GCD of 631, 704, 88, 890
• GCD of 696, 531, 79, 578
• GCD of 978, 156, 83, 453

Given numbers are 356, 305, 21, 721
The greatest common divisor of numbers 356, 305, 21, 721 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 356, 305, 21, 721 is 1.

1. What is the GCD of 356, 305, 21, 721?

GCD of given numbers 356, 305, 21, 721 is 1

2. How to calculate the greatest common divisor of 356, 305, 21, 721?

We can find the highest common divisor of 356, 305, 21, 721 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 356, 305, 21, 721 i.e 1.

3. How can I use the GCD of 356, 305, 21, 721Calculator?

Out the numbers 356, 305, 21, 721 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.