GCD of 690, 685, 128, 492 Calculator

Given Input numbers are 690, 685, 128, 492

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

Divisors of 690 :

The positive integer divisors of 690 that completely divides 690 are.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

Divisors of 685 :

The positive integer divisors of 685 that completely divides 685 are.

1, 5, 137, 685

Divisors of 128 :

The positive integer divisors of 128 that completely divides 128 are.

1, 2, 4, 8, 16, 32, 64, 128

Divisors of 492 :

The positive integer divisors of 492 that completely divides 492 are.

1, 2, 3, 4, 6, 12, 41, 82, 123, 164, 246, 492

GCD of numbers is the greatest common divisor

So, the GCD (690, 685, 128, 492) = 1.

Given numbers are 690, 685, 128, 492

The list of prime factors of all numbers are

Prime factors of 690 are 2 x 3 x 5 x 23

Prime factors of 685 are 5 x 137

Prime factors of 128 are 2 x 2 x 2 x 2 x 2 x 2 x 2

Prime factors of 492 are 2 x 2 x 3 x 41

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

Given numbers are 690, 685, 128, 492

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

Apply this formula for all numbers.

Step1:

LCM(690, 685) = 94530

GCD(690, 685) = ( 690 x 685 ) / 94530

= 690 / 685

= 690

Step2:

LCM(5, 128) = 640

GCD(5, 128) = ( 5 x 128 ) / 640

= 5 / 128

= 5

Step3:

LCM(1, 492) = 492

GCD(1, 492) = ( 1 x 492 ) / 492

= 1 / 492

= 1

So, Greatest Common Divisor of 690, 685, 128, 492 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 412, 471, 572, 596
• GCD of 148, 988, 508, 417
• GCD of 257, 316, 539, 386
• GCD of 103, 698, 754, 210
• GCD of 354, 908, 582, 269

Given numbers are 690, 685, 128, 492
The greatest common divisor of numbers 690, 685, 128, 492 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 690, 685, 128, 492 is 1.

1. What is the GCD of 690, 685, 128, 492?

GCD of given numbers 690, 685, 128, 492 is 1

2. How to calculate the greatest common divisor of 690, 685, 128, 492?

We can find the highest common divisor of 690, 685, 128, 492 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 690, 685, 128, 492 i.e 1.

3. How can I use the GCD of 690, 685, 128, 492Calculator?

Out the numbers 690, 685, 128, 492 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.