GCD of 807, 838, 646, 420 Calculator

Given Input numbers are 807, 838, 646, 420

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

Divisors of 807 :

The positive integer divisors of 807 that completely divides 807 are.

1, 3, 269, 807

Divisors of 838 :

The positive integer divisors of 838 that completely divides 838 are.

1, 2, 419, 838

Divisors of 646 :

The positive integer divisors of 646 that completely divides 646 are.

1, 2, 17, 19, 34, 38, 323, 646

Divisors of 420 :

The positive integer divisors of 420 that completely divides 420 are.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

GCD of numbers is the greatest common divisor

So, the GCD (807, 838, 646, 420) = 1.

Given numbers are 807, 838, 646, 420

The list of prime factors of all numbers are

Prime factors of 807 are 3 x 269

Prime factors of 838 are 2 x 419

Prime factors of 646 are 2 x 17 x 19

Prime factors of 420 are 2 x 2 x 3 x 5 x 7

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

Given numbers are 807, 838, 646, 420

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

Apply this formula for all numbers.

Step1:

LCM(807, 838) = 676266

GCD(807, 838) = ( 807 x 838 ) / 676266

= 807 / 838

= 807

Step2:

LCM(1, 646) = 646

GCD(1, 646) = ( 1 x 646 ) / 646

= 1 / 646

= 1

Step3:

LCM(1, 420) = 420

GCD(1, 420) = ( 1 x 420 ) / 420

= 1 / 420

= 1

So, Greatest Common Divisor of 807, 838, 646, 420 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 546, 835, 437, 700
• GCD of 478, 643, 437, 130
• GCD of 606, 844, 499, 418
• GCD of 165, 166, 715, 469
• GCD of 280, 952, 811, 436

Given numbers are 807, 838, 646, 420
The greatest common divisor of numbers 807, 838, 646, 420 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 807, 838, 646, 420 is 1.

1. What is the GCD of 807, 838, 646, 420?

GCD of given numbers 807, 838, 646, 420 is 1

2. How to calculate the greatest common divisor of 807, 838, 646, 420?

We can find the highest common divisor of 807, 838, 646, 420 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 807, 838, 646, 420 i.e 1.

3. How can I use the GCD of 807, 838, 646, 420Calculator?

Out the numbers 807, 838, 646, 420 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.