GCD of 221, 742, 470, 390 Calculator

Given Input numbers are 221, 742, 470, 390

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 742 :

The positive integer divisors of 742 that completely divides 742 are.

1, 2, 7, 14, 53, 106, 371, 742

Divisors of 470 :

The positive integer divisors of 470 that completely divides 470 are.

1, 2, 5, 10, 47, 94, 235, 470

Divisors of 390 :

The positive integer divisors of 390 that completely divides 390 are.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

GCD of numbers is the greatest common divisor

So, the GCD (221, 742, 470, 390) = 1.

Given numbers are 221, 742, 470, 390

The list of prime factors of all numbers are

Prime factors of 221 are 13 x 17

Prime factors of 742 are 2 x 7 x 53

Prime factors of 470 are 2 x 5 x 47

Prime factors of 390 are 2 x 3 x 5 x 13

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

Given numbers are 221, 742, 470, 390

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

Apply this formula for all numbers.

Step1:

LCM(221, 742) = 163982

GCD(221, 742) = ( 221 x 742 ) / 163982

= 221 / 742

= 221

Step2:

LCM(1, 470) = 470

GCD(1, 470) = ( 1 x 470 ) / 470

= 1 / 470

= 1

Step3:

LCM(1, 390) = 390

GCD(1, 390) = ( 1 x 390 ) / 390

= 1 / 390

= 1

So, Greatest Common Divisor of 221, 742, 470, 390 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 171, 850, 715, 625
• GCD of 490, 334, 226, 702
• GCD of 975, 831, 598, 427
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• GCD of 140, 821, 767, 777

Given numbers are 221, 742, 470, 390
The greatest common divisor of numbers 221, 742, 470, 390 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 221, 742, 470, 390 is 1.

1. What is the GCD of 221, 742, 470, 390?

GCD of given numbers 221, 742, 470, 390 is 1

2. How to calculate the greatest common divisor of 221, 742, 470, 390?

We can find the highest common divisor of 221, 742, 470, 390 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, 742, 470, 390 i.e 1.

3. How can I use the GCD of 221, 742, 470, 390Calculator?

Out the numbers 221, 742, 470, 390 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.