Online GCD Calculator is useful to find the GCD of 891, 728, 221, 920 quickly. Get the easiest ways to solve the greatest common divisor of 891, 728, 221, 920 i.e 1 in different methods as follows.
Given Input numbers are 891, 728, 221, 920
In the factoring method, we have to find the divisors of all numbers
Divisors of 891 :
The positive integer divisors of 891 that completely divides 891 are.
1, 3, 9, 11, 27, 33, 81, 99, 297, 891
Divisors of 728 :
The positive integer divisors of 728 that completely divides 728 are.
1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
Divisors of 221 :
The positive integer divisors of 221 that completely divides 221 are.
1, 13, 17, 221
Divisors of 920 :
The positive integer divisors of 920 that completely divides 920 are.
1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920
GCD of numbers is the greatest common divisor
So, the GCD (891, 728, 221, 920) = 1.
Given numbers are 891, 728, 221, 920
The list of prime factors of all numbers are
Prime factors of 891 are 3 x 3 x 3 x 3 x 11
Prime factors of 728 are 2 x 2 x 2 x 7 x 13
Prime factors of 221 are 13 x 17
Prime factors of 920 are 2 x 2 x 2 x 5 x 23
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 891, 728, 221, 920
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(891, 728) = 648648
GCD(891, 728) = ( 891 x 728 ) / 648648
= 891 / 728
= 891
Step2:
LCM(1, 221) = 221
GCD(1, 221) = ( 1 x 221 ) / 221
= 1 / 221
= 1
Step3:
LCM(1, 920) = 920
GCD(1, 920) = ( 1 x 920 ) / 920
= 1 / 920
= 1
So, Greatest Common Divisor of 891, 728, 221, 920 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 891, 728, 221, 920
The greatest common divisor of numbers 891, 728, 221, 920 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 891, 728, 221, 920 is 1.
1. What is the GCD of 891, 728, 221, 920?
GCD of given numbers 891, 728, 221, 920 is 1
2. How to calculate the greatest common divisor of 891, 728, 221, 920?
We can find the highest common divisor of 891, 728, 221, 920 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 891, 728, 221, 920 i.e 1.
3. How can I use the GCD of 891, 728, 221, 920Calculator?
Out the numbers 891, 728, 221, 920 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.