GCD of 620, 858, 28, 862 Calculator

Given Input numbers are 620, 858, 28, 862

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 620

List of positive integer divisors of 620 that divides 620 without a remainder.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

Divisors of 858

List of positive integer divisors of 858 that divides 858 without a remainder.

1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

Divisors of 862

List of positive integer divisors of 862 that divides 862 without a remainder.

1, 2, 431, 862

Greatest Common Divisior

We found the divisors of 620, 858, 28, 862 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 620, 858, 28, 862 is 2.

Therefore, GCD of numbers 620, 858, 28, 862 is 2

Given Input Data is 620, 858, 28, 862

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 620 is 2 x 2 x 5 x 31

Prime Factorization of 858 is 2 x 3 x 11 x 13

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 862 is 2 x 431

Highest common occurrences in the given inputs are 2¹

Multiplying them we get the GCD as 2

Step1:

Let's calculate the GCD of first two numbers

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

LCM(620, 858) = 265980

GCD(620, 858) = ( 620 x 858 ) / 265980

GCD(620, 858) = 531960 / 265980

GCD(620, 858) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 28

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

LCM(2, 28) = 28

GCD(2, 28) = ( 2 x 28 ) / 28

GCD(2, 28) = 56 / 28

GCD(2, 28) = 2

Step3:

Here we consider the GCD from the above i.e. 2 as first number and the next as 862

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

LCM(2, 862) = 862

GCD(2, 862) = ( 2 x 862 ) / 862

GCD(2, 862) = 1724 / 862

GCD(2, 862) = 2

GCD of 620, 858, 28, 862 is 2

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1. What is the GCD of 620, 858, 28, 862?

GCD of 620, 858, 28, 862 is 2

2. Where do I get the detailed procedure to find GCD of 620, 858, 28, 862?

You can find a detailed procedure to find GCD of 620, 858, 28, 862 on our page.

3. How to find GCD of 620, 858, 28, 862 on a calculator?

You can find the GCD of 620, 858, 28, 862 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.