GCD of 155, 396, 38, 720 Calculator

Given Input numbers are 155, 396, 38, 720

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

Divisors of 155 :

The positive integer divisors of 155 that completely divides 155 are.

1, 5, 31, 155

Divisors of 396 :

The positive integer divisors of 396 that completely divides 396 are.

1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396

Divisors of 38 :

The positive integer divisors of 38 that completely divides 38 are.

1, 2, 19, 38

Divisors of 720 :

The positive integer divisors of 720 that completely divides 720 are.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

GCD of numbers is the greatest common divisor

So, the GCD (155, 396, 38, 720) = 1.

Given numbers are 155, 396, 38, 720

The list of prime factors of all numbers are

Prime factors of 155 are 5 x 31

Prime factors of 396 are 2 x 2 x 3 x 3 x 11

Prime factors of 38 are 2 x 19

Prime factors of 720 are 2 x 2 x 2 x 2 x 3 x 3 x 5

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

Given numbers are 155, 396, 38, 720

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

Apply this formula for all numbers.

Step1:

LCM(155, 396) = 61380

GCD(155, 396) = ( 155 x 396 ) / 61380

= 155 / 396

= 155

Step2:

LCM(1, 38) = 38

GCD(1, 38) = ( 1 x 38 ) / 38

= 1 / 38

= 1

Step3:

LCM(1, 720) = 720

GCD(1, 720) = ( 1 x 720 ) / 720

= 1 / 720

= 1

So, Greatest Common Divisor of 155, 396, 38, 720 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 178, 994, 86, 198
• GCD of 809, 619, 58, 179
• GCD of 521, 741, 45, 728
• GCD of 470, 758, 96, 229
• GCD of 188, 652, 98, 962

Given numbers are 155, 396, 38, 720
The greatest common divisor of numbers 155, 396, 38, 720 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 155, 396, 38, 720 is 1.

1. What is the GCD of 155, 396, 38, 720?

GCD of given numbers 155, 396, 38, 720 is 1

2. How to calculate the greatest common divisor of 155, 396, 38, 720?

We can find the highest common divisor of 155, 396, 38, 720 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 155, 396, 38, 720 i.e 1.

3. How can I use the GCD of 155, 396, 38, 720Calculator?

Out the numbers 155, 396, 38, 720 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.