Online GCD Calculator is useful to find the GCD of 815, 169, 389, 620 quickly. Get the easiest ways to solve the greatest common divisor of 815, 169, 389, 620 i.e 1 in different methods as follows.
Given Input numbers are 815, 169, 389, 620
In the factoring method, we have to find the divisors of all numbers
Divisors of 815 :
The positive integer divisors of 815 that completely divides 815 are.
1, 5, 163, 815
Divisors of 169 :
The positive integer divisors of 169 that completely divides 169 are.
1, 13, 169
Divisors of 389 :
The positive integer divisors of 389 that completely divides 389 are.
1, 389
Divisors of 620 :
The positive integer divisors of 620 that completely divides 620 are.
1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
GCD of numbers is the greatest common divisor
So, the GCD (815, 169, 389, 620) = 1.
Given numbers are 815, 169, 389, 620
The list of prime factors of all numbers are
Prime factors of 815 are 5 x 163
Prime factors of 169 are 13 x 13
Prime factors of 389 are 389
Prime factors of 620 are 2 x 2 x 5 x 31
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 815, 169, 389, 620
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(815, 169) = 137735
GCD(815, 169) = ( 815 x 169 ) / 137735
= 815 / 169
= 815
Step2:
LCM(1, 389) = 389
GCD(1, 389) = ( 1 x 389 ) / 389
= 1 / 389
= 1
Step3:
LCM(1, 620) = 620
GCD(1, 620) = ( 1 x 620 ) / 620
= 1 / 620
= 1
So, Greatest Common Divisor of 815, 169, 389, 620 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 815, 169, 389, 620
The greatest common divisor of numbers 815, 169, 389, 620 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 815, 169, 389, 620 is 1.
1. What is the GCD of 815, 169, 389, 620?
GCD of given numbers 815, 169, 389, 620 is 1
2. How to calculate the greatest common divisor of 815, 169, 389, 620?
We can find the highest common divisor of 815, 169, 389, 620 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 815, 169, 389, 620 i.e 1.
3. How can I use the GCD of 815, 169, 389, 620Calculator?
Out the numbers 815, 169, 389, 620 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.