GCD of 990, 420, 136, 124 Calculator

Given Input numbers are 990, 420, 136, 124

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

Divisors of 990 :

The positive integer divisors of 990 that completely divides 990 are.

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990

Divisors of 420 :

The positive integer divisors of 420 that completely divides 420 are.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

Divisors of 136 :

The positive integer divisors of 136 that completely divides 136 are.

1, 2, 4, 8, 17, 34, 68, 136

Divisors of 124 :

The positive integer divisors of 124 that completely divides 124 are.

1, 2, 4, 31, 62, 124

GCD of numbers is the greatest common divisor

So, the GCD (990, 420, 136, 124) = 2.

Given numbers are 990, 420, 136, 124

The list of prime factors of all numbers are

Prime factors of 990 are 2 x 3 x 3 x 5 x 11

Prime factors of 420 are 2 x 2 x 3 x 5 x 7

Prime factors of 136 are 2 x 2 x 2 x 17

Prime factors of 124 are 2 x 2 x 31

The highest common occurrence is 2¹

Therefore, GCD of 990, 420, 136, 124 is 2.

Given numbers are 990, 420, 136, 124

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

Apply this formula for all numbers.

Step1:

LCM(990, 420) = 13860

GCD(990, 420) = ( 990 x 420 ) / 13860

= 990 / 420

= 990

Step2:

LCM(30, 136) = 2040

GCD(30, 136) = ( 30 x 136 ) / 2040

= 30 / 136

= 30

Step3:

LCM(2, 124) = 124

GCD(2, 124) = ( 2 x 124 ) / 124

= 2 / 124

= 2

So, Greatest Common Divisor of 990, 420, 136, 124 is 2

Here are some samples of GCD of Numbers calculations.

• GCD of 683, 651, 960, 367
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• GCD of 381, 696, 839, 309
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• GCD of 783, 626, 353, 328

Given numbers are 990, 420, 136, 124
The greatest common divisor of numbers 990, 420, 136, 124 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 990, 420, 136, 124 is 2.

1. What is the GCD of 990, 420, 136, 124?

GCD of given numbers 990, 420, 136, 124 is 2

2. How to calculate the greatest common divisor of 990, 420, 136, 124?

We can find the highest common divisor of 990, 420, 136, 124 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 990, 420, 136, 124 i.e 2.

3. How can I use the GCD of 990, 420, 136, 124Calculator?

Out the numbers 990, 420, 136, 124 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.