GCD of 70, 15, 69, 20 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 70, 15, 69, 20 quickly. Get the easiest ways to solve the greatest common divisor of 70, 15, 69, 20 i.e 1 in different methods as follows.
Given Input numbers are 70, 15, 69, 20
In the factoring method, we have to find the divisors of all numbers
Divisors of 70 :
The positive integer divisors of 70 that completely divides 70 are.
1, 2, 5, 7, 10, 14, 35, 70
Divisors of 15 :
The positive integer divisors of 15 that completely divides 15 are.
1, 3, 5, 15
Divisors of 69 :
The positive integer divisors of 69 that completely divides 69 are.
1, 3, 23, 69
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 (70, 15, 69, 20) = 1.
Given numbers are 70, 15, 69, 20
The list of prime factors of all numbers are
Prime factors of 70 are 2 x 5 x 7
Prime factors of 15 are 3 x 5
Prime factors of 69 are 3 x 23
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 70, 15, 69, 20 using LCM Formula
Given numbers are 70, 15, 69, 20
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(70, 15) = 210
GCD(70, 15) = ( 70 x 15 ) / 210
= 70 / 15
= 70
Step2:
LCM(5, 69) = 345
GCD(5, 69) = ( 5 x 69 ) / 345
= 5 / 69
= 5
Step3:
LCM(1, 20) = 20
GCD(1, 20) = ( 1 x 20 ) / 20
= 1 / 20
= 1
So, Greatest Common Divisor of 70, 15, 69, 20 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 70, 15, 69, 20
Given numbers are 70, 15, 69, 20
The greatest common divisor of numbers 70, 15, 69, 20 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 70, 15, 69, 20 is 1.
FAQs on GCD of 70, 15, 69, 20 Calculator
1. What is the GCD of 70, 15, 69, 20?
GCD of given numbers 70, 15, 69, 20 is 1
2. How to calculate the greatest common divisor of 70, 15, 69, 20?
We can find the highest common divisor of 70, 15, 69, 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 70, 15, 69, 20 i.e 1.
3. How can I use the GCD of 70, 15, 69, 20Calculator?
Out the numbers 70, 15, 69, 20 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.