GCD of 31, 49, 13, 20 Calculator

Given Input numbers are 31, 49, 13, 20

In the factoring method, we have to find the divisors of all numbers

Divisors of 31 :

The positive integer divisors of 31 that completely divides 31 are.

1, 31

Divisors of 49 :

The positive integer divisors of 49 that completely divides 49 are.

1, 7, 49

Divisors of 13 :

The positive integer divisors of 13 that completely divides 13 are.

1, 13

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 (31, 49, 13, 20) = 1.

Given numbers are 31, 49, 13, 20

The list of prime factors of all numbers are

Prime factors of 31 are 31

Prime factors of 49 are 7 x 7

Prime factors of 13 are 13

Prime factors of 20 are 2 x 2 x 5

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 31, 49, 13, 20

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(31, 49) = 1519

GCD(31, 49) = ( 31 x 49 ) / 1519

= 31 / 49

= 31

Step2:

LCM(1, 13) = 13

GCD(1, 13) = ( 1 x 13 ) / 13

= 1 / 13

= 1

Step3:

LCM(1, 20) = 20

GCD(1, 20) = ( 1 x 20 ) / 20

= 1 / 20

= 1

So, Greatest Common Divisor of 31, 49, 13, 20 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 80, 50, 38, 85
• GCD of 91, 22, 85, 91
• GCD of 21, 32, 12, 65
• GCD of 12, 84, 43, 79
• GCD of 90, 17, 51, 73

Given numbers are 31, 49, 13, 20
The greatest common divisor of numbers 31, 49, 13, 20 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 31, 49, 13, 20 is 1.

1. What is the GCD of 31, 49, 13, 20?

GCD of given numbers 31, 49, 13, 20 is 1

2. How to calculate the greatest common divisor of 31, 49, 13, 20?

We can find the highest common divisor of 31, 49, 13, 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 31, 49, 13, 20 i.e 1.

3. How can I use the GCD of 31, 49, 13, 20Calculator?

Out the numbers 31, 49, 13, 20 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.