GCD of 394, 780, 85, 720 Calculator

Given Input numbers are 394, 780, 85, 720

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

Divisors of 394 :

The positive integer divisors of 394 that completely divides 394 are.

1, 2, 197, 394

Divisors of 780 :

The positive integer divisors of 780 that completely divides 780 are.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

Divisors of 85 :

The positive integer divisors of 85 that completely divides 85 are.

1, 5, 17, 85

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 (394, 780, 85, 720) = 1.

Given numbers are 394, 780, 85, 720

The list of prime factors of all numbers are

Prime factors of 394 are 2 x 197

Prime factors of 780 are 2 x 2 x 3 x 5 x 13

Prime factors of 85 are 5 x 17

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 394, 780, 85, 720

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

Apply this formula for all numbers.

Step1:

LCM(394, 780) = 153660

GCD(394, 780) = ( 394 x 780 ) / 153660

= 394 / 780

= 394

Step2:

LCM(2, 85) = 170

GCD(2, 85) = ( 2 x 85 ) / 170

= 2 / 85

= 2

Step3:

LCM(1, 720) = 720

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

= 1 / 720

= 1

So, Greatest Common Divisor of 394, 780, 85, 720 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 819, 656, 92, 815
• GCD of 621, 403, 16, 346
• GCD of 140, 661, 30, 292
• GCD of 546, 490, 58, 293
• GCD of 931, 562, 69, 232

Given numbers are 394, 780, 85, 720
The greatest common divisor of numbers 394, 780, 85, 720 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 394, 780, 85, 720 is 1.

1. What is the GCD of 394, 780, 85, 720?

GCD of given numbers 394, 780, 85, 720 is 1

2. How to calculate the greatest common divisor of 394, 780, 85, 720?

We can find the highest common divisor of 394, 780, 85, 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 394, 780, 85, 720 i.e 1.

3. How can I use the GCD of 394, 780, 85, 720Calculator?

Out the numbers 394, 780, 85, 720 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.