GCD of 640, 830, 390 Calculator

Given Input numbers are 640, 830, 390

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

Divisors of 640 :

The positive integer divisors of 640 that completely divides 640 are.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

Divisors of 830 :

The positive integer divisors of 830 that completely divides 830 are.

1, 2, 5, 10, 83, 166, 415, 830

Divisors of 390 :

The positive integer divisors of 390 that completely divides 390 are.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

GCD of numbers is the greatest common divisor

So, the GCD (640, 830, 390) = 10.

Given numbers are 640, 830, 390

The list of prime factors of all numbers are

Prime factors of 640 are 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

Prime factors of 830 are 2 x 5 x 83

Prime factors of 390 are 2 x 3 x 5 x 13

The highest common occurrence is 2¹ x 5¹

Therefore, GCD of 640, 830, 390 is 10.

Given numbers are 640, 830, 390

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

Apply this formula for all numbers.

Step1:

LCM(640, 830) = 53120

GCD(640, 830) = ( 640 x 830 ) / 53120

= 640 / 830

= 640

Step2:

LCM(10, 390) = 390

GCD(10, 390) = ( 10 x 390 ) / 390

= 10 / 390

= 10

So, Greatest Common Divisor of 640, 830, 390 is 10

Here are some samples of GCD of Numbers calculations.

• GCD of 124, 521, 619
• GCD of 631, 708, 691
• GCD of 439, 645, 933
• GCD of 158, 344, 472
• GCD of 381, 426, 144

Given numbers are 640, 830, 390
The greatest common divisor of numbers 640, 830, 390 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 640, 830, 390 is 10.

1. What is the GCD of 640, 830, 390?

GCD of given numbers 640, 830, 390 is 10

2. How to calculate the greatest common divisor of 640, 830, 390?

We can find the highest common divisor of 640, 830, 390 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 640, 830, 390 i.e 10.

3. How can I use the GCD of 640, 830, 390Calculator?

Out the numbers 640, 830, 390 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.