Online GCD Calculator is useful to find the GCD of 638, 748, 990, 168 quickly. Get the easiest ways to solve the greatest common divisor of 638, 748, 990, 168 i.e 2 in different methods as follows.
Given Input numbers are 638, 748, 990, 168
In the factoring method, we have to find the divisors of all numbers
Divisors of 638 :
The positive integer divisors of 638 that completely divides 638 are.
1, 2, 11, 22, 29, 58, 319, 638
Divisors of 748 :
The positive integer divisors of 748 that completely divides 748 are.
1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748
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 168 :
The positive integer divisors of 168 that completely divides 168 are.
1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168
GCD of numbers is the greatest common divisor
So, the GCD (638, 748, 990, 168) = 2.
Given numbers are 638, 748, 990, 168
The list of prime factors of all numbers are
Prime factors of 638 are 2 x 11 x 29
Prime factors of 748 are 2 x 2 x 11 x 17
Prime factors of 990 are 2 x 3 x 3 x 5 x 11
Prime factors of 168 are 2 x 2 x 2 x 3 x 7
The highest common occurrence is 21
Therefore, GCD of 638, 748, 990, 168 is 2.
Given numbers are 638, 748, 990, 168
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(638, 748) = 21692
GCD(638, 748) = ( 638 x 748 ) / 21692
= 638 / 748
= 638
Step2:
LCM(22, 990) = 990
GCD(22, 990) = ( 22 x 990 ) / 990
= 22 / 990
= 22
Step3:
LCM(22, 168) = 1848
GCD(22, 168) = ( 22 x 168 ) / 1848
= 22 / 168
= 22
So, Greatest Common Divisor of 638, 748, 990, 168 is 2
Here are some samples of GCD of Numbers calculations.
Given numbers are 638, 748, 990, 168
The greatest common divisor of numbers 638, 748, 990, 168 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 638, 748, 990, 168 is 2.
1. What is the GCD of 638, 748, 990, 168?
GCD of given numbers 638, 748, 990, 168 is 2
2. How to calculate the greatest common divisor of 638, 748, 990, 168?
We can find the highest common divisor of 638, 748, 990, 168 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 638, 748, 990, 168 i.e 2.
3. How can I use the GCD of 638, 748, 990, 168Calculator?
Out the numbers 638, 748, 990, 168 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.