GCD of 155, 345, 28, 890 Calculator

Given Input numbers are 155, 345, 28, 890

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

Divisors of 155 :

The positive integer divisors of 155 that completely divides 155 are.

1, 5, 31, 155

Divisors of 345 :

The positive integer divisors of 345 that completely divides 345 are.

1, 3, 5, 15, 23, 69, 115, 345

Divisors of 28 :

The positive integer divisors of 28 that completely divides 28 are.

1, 2, 4, 7, 14, 28

Divisors of 890 :

The positive integer divisors of 890 that completely divides 890 are.

1, 2, 5, 10, 89, 178, 445, 890

GCD of numbers is the greatest common divisor

So, the GCD (155, 345, 28, 890) = 1.

Given numbers are 155, 345, 28, 890

The list of prime factors of all numbers are

Prime factors of 155 are 5 x 31

Prime factors of 345 are 3 x 5 x 23

Prime factors of 28 are 2 x 2 x 7

Prime factors of 890 are 2 x 5 x 89

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

Given numbers are 155, 345, 28, 890

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

Apply this formula for all numbers.

Step1:

LCM(155, 345) = 10695

GCD(155, 345) = ( 155 x 345 ) / 10695

= 155 / 345

= 155

Step2:

LCM(5, 28) = 140

GCD(5, 28) = ( 5 x 28 ) / 140

= 5 / 28

= 5

Step3:

LCM(1, 890) = 890

GCD(1, 890) = ( 1 x 890 ) / 890

= 1 / 890

= 1

So, Greatest Common Divisor of 155, 345, 28, 890 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 124, 789, 94, 151
• GCD of 965, 974, 22, 666
• GCD of 642, 258, 18, 851
• GCD of 179, 405, 11, 868
• GCD of 821, 983, 17, 937

Given numbers are 155, 345, 28, 890
The greatest common divisor of numbers 155, 345, 28, 890 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 155, 345, 28, 890 is 1.

1. What is the GCD of 155, 345, 28, 890?

GCD of given numbers 155, 345, 28, 890 is 1

2. How to calculate the greatest common divisor of 155, 345, 28, 890?

We can find the highest common divisor of 155, 345, 28, 890 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 155, 345, 28, 890 i.e 1.

3. How can I use the GCD of 155, 345, 28, 890Calculator?

Out the numbers 155, 345, 28, 890 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.