GCD of 408, 156, 397, 620 Calculator

Given Input numbers are 408, 156, 397, 620

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

Divisors of 408 :

The positive integer divisors of 408 that completely divides 408 are.

1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408

Divisors of 156 :

The positive integer divisors of 156 that completely divides 156 are.

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156

Divisors of 397 :

The positive integer divisors of 397 that completely divides 397 are.

1, 397

Divisors of 620 :

The positive integer divisors of 620 that completely divides 620 are.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

GCD of numbers is the greatest common divisor

So, the GCD (408, 156, 397, 620) = 1.

Given numbers are 408, 156, 397, 620

The list of prime factors of all numbers are

Prime factors of 408 are 2 x 2 x 2 x 3 x 17

Prime factors of 156 are 2 x 2 x 3 x 13

Prime factors of 397 are 397

Prime factors of 620 are 2 x 2 x 5 x 31

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

Given numbers are 408, 156, 397, 620

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

Apply this formula for all numbers.

Step1:

LCM(408, 156) = 5304

GCD(408, 156) = ( 408 x 156 ) / 5304

= 408 / 156

= 408

Step2:

LCM(12, 397) = 4764

GCD(12, 397) = ( 12 x 397 ) / 4764

= 12 / 397

= 12

Step3:

LCM(1, 620) = 620

GCD(1, 620) = ( 1 x 620 ) / 620

= 1 / 620

= 1

So, Greatest Common Divisor of 408, 156, 397, 620 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 302, 821, 773, 375
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• GCD of 339, 410, 144, 476
• GCD of 722, 164, 189, 608

Given numbers are 408, 156, 397, 620
The greatest common divisor of numbers 408, 156, 397, 620 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 408, 156, 397, 620 is 1.

1. What is the GCD of 408, 156, 397, 620?

GCD of given numbers 408, 156, 397, 620 is 1

2. How to calculate the greatest common divisor of 408, 156, 397, 620?

We can find the highest common divisor of 408, 156, 397, 620 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 408, 156, 397, 620 i.e 1.

3. How can I use the GCD of 408, 156, 397, 620Calculator?

Out the numbers 408, 156, 397, 620 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.