GCD of 221, 820, 728, 715 Calculator

Given Input numbers are 221, 820, 728, 715

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

Divisors of 221 :

The positive integer divisors of 221 that completely divides 221 are.

1, 13, 17, 221

Divisors of 820 :

The positive integer divisors of 820 that completely divides 820 are.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Divisors of 728 :

The positive integer divisors of 728 that completely divides 728 are.

1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728

Divisors of 715 :

The positive integer divisors of 715 that completely divides 715 are.

1, 5, 11, 13, 55, 65, 143, 715

GCD of numbers is the greatest common divisor

So, the GCD (221, 820, 728, 715) = 1.

Given numbers are 221, 820, 728, 715

The list of prime factors of all numbers are

Prime factors of 221 are 13 x 17

Prime factors of 820 are 2 x 2 x 5 x 41

Prime factors of 728 are 2 x 2 x 2 x 7 x 13

Prime factors of 715 are 5 x 11 x 13

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

Given numbers are 221, 820, 728, 715

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

Apply this formula for all numbers.

Step1:

LCM(221, 820) = 181220

GCD(221, 820) = ( 221 x 820 ) / 181220

= 221 / 820

= 221

Step2:

LCM(1, 728) = 728

GCD(1, 728) = ( 1 x 728 ) / 728

= 1 / 728

= 1

Step3:

LCM(1, 715) = 715

GCD(1, 715) = ( 1 x 715 ) / 715

= 1 / 715

= 1

So, Greatest Common Divisor of 221, 820, 728, 715 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 872, 619, 939, 562
• GCD of 925, 856, 758, 819
• GCD of 166, 570, 675, 430
• GCD of 922, 604, 834, 179
• GCD of 580, 798, 484, 782

Given numbers are 221, 820, 728, 715
The greatest common divisor of numbers 221, 820, 728, 715 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 221, 820, 728, 715 is 1.

1. What is the GCD of 221, 820, 728, 715?

GCD of given numbers 221, 820, 728, 715 is 1

2. How to calculate the greatest common divisor of 221, 820, 728, 715?

We can find the highest common divisor of 221, 820, 728, 715 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 221, 820, 728, 715 i.e 1.

3. How can I use the GCD of 221, 820, 728, 715Calculator?

Out the numbers 221, 820, 728, 715 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.