GCD of 791, 720, 398, 861 Calculator

Given Input numbers are 791, 720, 398, 861

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

Divisors of 791 :

The positive integer divisors of 791 that completely divides 791 are.

1, 7, 113, 791

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

Divisors of 398 :

The positive integer divisors of 398 that completely divides 398 are.

1, 2, 199, 398

Divisors of 861 :

The positive integer divisors of 861 that completely divides 861 are.

1, 3, 7, 21, 41, 123, 287, 861

GCD of numbers is the greatest common divisor

So, the GCD (791, 720, 398, 861) = 1.

Given numbers are 791, 720, 398, 861

The list of prime factors of all numbers are

Prime factors of 791 are 7 x 113

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

Prime factors of 398 are 2 x 199

Prime factors of 861 are 3 x 7 x 41

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

Given numbers are 791, 720, 398, 861

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

Apply this formula for all numbers.

Step1:

LCM(791, 720) = 569520

GCD(791, 720) = ( 791 x 720 ) / 569520

= 791 / 720

= 791

Step2:

LCM(1, 398) = 398

GCD(1, 398) = ( 1 x 398 ) / 398

= 1 / 398

= 1

Step3:

LCM(1, 861) = 861

GCD(1, 861) = ( 1 x 861 ) / 861

= 1 / 861

= 1

So, Greatest Common Divisor of 791, 720, 398, 861 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 896, 264, 238, 691
• GCD of 292, 103, 980, 840
• GCD of 283, 302, 440, 624
• GCD of 533, 311, 399, 209
• GCD of 468, 830, 189, 811

Given numbers are 791, 720, 398, 861
The greatest common divisor of numbers 791, 720, 398, 861 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 791, 720, 398, 861 is 1.

1. What is the GCD of 791, 720, 398, 861?

GCD of given numbers 791, 720, 398, 861 is 1

2. How to calculate the greatest common divisor of 791, 720, 398, 861?

We can find the highest common divisor of 791, 720, 398, 861 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 791, 720, 398, 861 i.e 1.

3. How can I use the GCD of 791, 720, 398, 861Calculator?

Out the numbers 791, 720, 398, 861 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.