Online GCD Calculator is useful to find the GCD of 280, 138, 620 quickly. Get the easiest ways to solve the greatest common divisor of 280, 138, 620 i.e 2 in different methods as follows.
Given Input numbers are 280, 138, 620
In the factoring method, we have to find the divisors of all numbers
Divisors of 280 :
The positive integer divisors of 280 that completely divides 280 are.
1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
Divisors of 138 :
The positive integer divisors of 138 that completely divides 138 are.
1, 2, 3, 6, 23, 46, 69, 138
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 (280, 138, 620) = 2.
Given numbers are 280, 138, 620
The list of prime factors of all numbers are
Prime factors of 280 are 2 x 2 x 2 x 5 x 7
Prime factors of 138 are 2 x 3 x 23
Prime factors of 620 are 2 x 2 x 5 x 31
The highest common occurrence is 21
Therefore, GCD of 280, 138, 620 is 2.
Given numbers are 280, 138, 620
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(280, 138) = 19320
GCD(280, 138) = ( 280 x 138 ) / 19320
= 280 / 138
= 280
Step2:
LCM(2, 620) = 620
GCD(2, 620) = ( 2 x 620 ) / 620
= 2 / 620
= 2
So, Greatest Common Divisor of 280, 138, 620 is 2
Here are some samples of GCD of Numbers calculations.
Given numbers are 280, 138, 620
The greatest common divisor of numbers 280, 138, 620 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 280, 138, 620 is 2.
1. What is the GCD of 280, 138, 620?
GCD of given numbers 280, 138, 620 is 2
2. How to calculate the greatest common divisor of 280, 138, 620?
We can find the highest common divisor of 280, 138, 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 280, 138, 620 i.e 2.
3. How can I use the GCD of 280, 138, 620Calculator?
Out the numbers 280, 138, 620 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.