GCD of 34, 68, 81, 20 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 34, 68, 81, 20 quickly. Get the easiest ways to solve the greatest common divisor of 34, 68, 81, 20 i.e 1 in different methods as follows.
Given Input numbers are 34, 68, 81, 20
In the factoring method, we have to find the divisors of all numbers
Divisors of 34 :
The positive integer divisors of 34 that completely divides 34 are.
1, 2, 17, 34
Divisors of 68 :
The positive integer divisors of 68 that completely divides 68 are.
1, 2, 4, 17, 34, 68
Divisors of 81 :
The positive integer divisors of 81 that completely divides 81 are.
1, 3, 9, 27, 81
Divisors of 20 :
The positive integer divisors of 20 that completely divides 20 are.
1, 2, 4, 5, 10, 20
GCD of numbers is the greatest common divisor
So, the GCD (34, 68, 81, 20) = 1.
Given numbers are 34, 68, 81, 20
The list of prime factors of all numbers are
Prime factors of 34 are 2 x 17
Prime factors of 68 are 2 x 2 x 17
Prime factors of 81 are 3 x 3 x 3 x 3
Prime factors of 20 are 2 x 2 x 5
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 34, 68, 81, 20 using LCM Formula
Given numbers are 34, 68, 81, 20
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(34, 68) = 68
GCD(34, 68) = ( 34 x 68 ) / 68
= 34 / 68
= 34
Step2:
LCM(34, 81) = 2754
GCD(34, 81) = ( 34 x 81 ) / 2754
= 34 / 81
= 34
Step3:
LCM(1, 20) = 20
GCD(1, 20) = ( 1 x 20 ) / 20
= 1 / 20
= 1
So, Greatest Common Divisor of 34, 68, 81, 20 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 34, 68, 81, 20
Given numbers are 34, 68, 81, 20
The greatest common divisor of numbers 34, 68, 81, 20 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 34, 68, 81, 20 is 1.
FAQs on GCD of 34, 68, 81, 20 Calculator
1. What is the GCD of 34, 68, 81, 20?
GCD of given numbers 34, 68, 81, 20 is 1
2. How to calculate the greatest common divisor of 34, 68, 81, 20?
We can find the highest common divisor of 34, 68, 81, 20 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 34, 68, 81, 20 i.e 1.
3. How can I use the GCD of 34, 68, 81, 20Calculator?
Out the numbers 34, 68, 81, 20 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.