GCD of 985, 393, 720, 840 Calculator

Given Input numbers are 985, 393, 720, 840

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

Divisors of 985 :

The positive integer divisors of 985 that completely divides 985 are.

1, 5, 197, 985

Divisors of 393 :

The positive integer divisors of 393 that completely divides 393 are.

1, 3, 131, 393

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 840 :

The positive integer divisors of 840 that completely divides 840 are.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

GCD of numbers is the greatest common divisor

So, the GCD (985, 393, 720, 840) = 1.

Given numbers are 985, 393, 720, 840

The list of prime factors of all numbers are

Prime factors of 985 are 5 x 197

Prime factors of 393 are 3 x 131

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

Prime factors of 840 are 2 x 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 985, 393, 720, 840

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

Apply this formula for all numbers.

Step1:

LCM(985, 393) = 387105

GCD(985, 393) = ( 985 x 393 ) / 387105

= 985 / 393

= 985

Step2:

LCM(1, 720) = 720

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

= 1 / 720

= 1

Step3:

LCM(1, 840) = 840

GCD(1, 840) = ( 1 x 840 ) / 840

= 1 / 840

= 1

So, Greatest Common Divisor of 985, 393, 720, 840 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 701, 134, 413, 587
• GCD of 250, 457, 343, 507
• GCD of 311, 332, 847, 690
• GCD of 903, 918, 687, 750
• GCD of 977, 636, 199, 253

Given numbers are 985, 393, 720, 840
The greatest common divisor of numbers 985, 393, 720, 840 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 985, 393, 720, 840 is 1.

1. What is the GCD of 985, 393, 720, 840?

GCD of given numbers 985, 393, 720, 840 is 1

2. How to calculate the greatest common divisor of 985, 393, 720, 840?

We can find the highest common divisor of 985, 393, 720, 840 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 985, 393, 720, 840 i.e 1.

3. How can I use the GCD of 985, 393, 720, 840Calculator?

Out the numbers 985, 393, 720, 840 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.