Online GCD Calculator is useful to find the GCD of 390, 186, 680, 668 quickly. Get the easiest ways to solve the greatest common divisor of 390, 186, 680, 668 i.e 2 in different methods as follows.
Given Input numbers are 390, 186, 680, 668
In the factoring method, we have to find the divisors of all numbers
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
Divisors of 186 :
The positive integer divisors of 186 that completely divides 186 are.
1, 2, 3, 6, 31, 62, 93, 186
Divisors of 680 :
The positive integer divisors of 680 that completely divides 680 are.
1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
Divisors of 668 :
The positive integer divisors of 668 that completely divides 668 are.
1, 2, 4, 167, 334, 668
GCD of numbers is the greatest common divisor
So, the GCD (390, 186, 680, 668) = 2.
Given numbers are 390, 186, 680, 668
The list of prime factors of all numbers are
Prime factors of 390 are 2 x 3 x 5 x 13
Prime factors of 186 are 2 x 3 x 31
Prime factors of 680 are 2 x 2 x 2 x 5 x 17
Prime factors of 668 are 2 x 2 x 167
The highest common occurrence is 21
Therefore, GCD of 390, 186, 680, 668 is 2.
Given numbers are 390, 186, 680, 668
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(390, 186) = 12090
GCD(390, 186) = ( 390 x 186 ) / 12090
= 390 / 186
= 390
Step2:
LCM(6, 680) = 2040
GCD(6, 680) = ( 6 x 680 ) / 2040
= 6 / 680
= 6
Step3:
LCM(2, 668) = 668
GCD(2, 668) = ( 2 x 668 ) / 668
= 2 / 668
= 2
So, Greatest Common Divisor of 390, 186, 680, 668 is 2
Here are some samples of GCD of Numbers calculations.
Given numbers are 390, 186, 680, 668
The greatest common divisor of numbers 390, 186, 680, 668 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 390, 186, 680, 668 is 2.
1. What is the GCD of 390, 186, 680, 668?
GCD of given numbers 390, 186, 680, 668 is 2
2. How to calculate the greatest common divisor of 390, 186, 680, 668?
We can find the highest common divisor of 390, 186, 680, 668 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 390, 186, 680, 668 i.e 2.
3. How can I use the GCD of 390, 186, 680, 668Calculator?
Out the numbers 390, 186, 680, 668 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.