Online GCD Calculator is useful to find the GCD of 690, 355, 862, 980 quickly. Get the easiest ways to solve the greatest common divisor of 690, 355, 862, 980 i.e 1 in different methods as follows.
Given Input numbers are 690, 355, 862, 980
In the factoring method, we have to find the divisors of all numbers
Divisors of 690 :
The positive integer divisors of 690 that completely divides 690 are.
1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
Divisors of 355 :
The positive integer divisors of 355 that completely divides 355 are.
1, 5, 71, 355
Divisors of 862 :
The positive integer divisors of 862 that completely divides 862 are.
1, 2, 431, 862
Divisors of 980 :
The positive integer divisors of 980 that completely divides 980 are.
1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
GCD of numbers is the greatest common divisor
So, the GCD (690, 355, 862, 980) = 1.
Given numbers are 690, 355, 862, 980
The list of prime factors of all numbers are
Prime factors of 690 are 2 x 3 x 5 x 23
Prime factors of 355 are 5 x 71
Prime factors of 862 are 2 x 431
Prime factors of 980 are 2 x 2 x 5 x 7 x 7
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 690, 355, 862, 980
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(690, 355) = 48990
GCD(690, 355) = ( 690 x 355 ) / 48990
= 690 / 355
= 690
Step2:
LCM(5, 862) = 4310
GCD(5, 862) = ( 5 x 862 ) / 4310
= 5 / 862
= 5
Step3:
LCM(1, 980) = 980
GCD(1, 980) = ( 1 x 980 ) / 980
= 1 / 980
= 1
So, Greatest Common Divisor of 690, 355, 862, 980 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 690, 355, 862, 980
The greatest common divisor of numbers 690, 355, 862, 980 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 690, 355, 862, 980 is 1.
1. What is the GCD of 690, 355, 862, 980?
GCD of given numbers 690, 355, 862, 980 is 1
2. How to calculate the greatest common divisor of 690, 355, 862, 980?
We can find the highest common divisor of 690, 355, 862, 980 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 690, 355, 862, 980 i.e 1.
3. How can I use the GCD of 690, 355, 862, 980Calculator?
Out the numbers 690, 355, 862, 980 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.