Online GCD Calculator is useful to find the GCD of 189, 672, 865, 405 quickly. Get the easiest ways to solve the greatest common divisor of 189, 672, 865, 405 i.e 1 in different methods as follows.
Given Input numbers are 189, 672, 865, 405
In the factoring method, we have to find the divisors of all numbers
Divisors of 189 :
The positive integer divisors of 189 that completely divides 189 are.
1, 3, 7, 9, 21, 27, 63, 189
Divisors of 672 :
The positive integer divisors of 672 that completely divides 672 are.
1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672
Divisors of 865 :
The positive integer divisors of 865 that completely divides 865 are.
1, 5, 173, 865
Divisors of 405 :
The positive integer divisors of 405 that completely divides 405 are.
1, 3, 5, 9, 15, 27, 45, 81, 135, 405
GCD of numbers is the greatest common divisor
So, the GCD (189, 672, 865, 405) = 1.
Given numbers are 189, 672, 865, 405
The list of prime factors of all numbers are
Prime factors of 189 are 3 x 3 x 3 x 7
Prime factors of 672 are 2 x 2 x 2 x 2 x 2 x 3 x 7
Prime factors of 865 are 5 x 173
Prime factors of 405 are 3 x 3 x 3 x 3 x 5
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 189, 672, 865, 405
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(189, 672) = 6048
GCD(189, 672) = ( 189 x 672 ) / 6048
= 189 / 672
= 189
Step2:
LCM(21, 865) = 18165
GCD(21, 865) = ( 21 x 865 ) / 18165
= 21 / 865
= 21
Step3:
LCM(1, 405) = 405
GCD(1, 405) = ( 1 x 405 ) / 405
= 1 / 405
= 1
So, Greatest Common Divisor of 189, 672, 865, 405 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 189, 672, 865, 405
The greatest common divisor of numbers 189, 672, 865, 405 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 189, 672, 865, 405 is 1.
1. What is the GCD of 189, 672, 865, 405?
GCD of given numbers 189, 672, 865, 405 is 1
2. How to calculate the greatest common divisor of 189, 672, 865, 405?
We can find the highest common divisor of 189, 672, 865, 405 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 189, 672, 865, 405 i.e 1.
3. How can I use the GCD of 189, 672, 865, 405Calculator?
Out the numbers 189, 672, 865, 405 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.