GCD of 155, 157, 221, 490 Calculator

Given Input numbers are 155, 157, 221, 490

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 157 :

The positive integer divisors of 157 that completely divides 157 are.

1, 157

Divisors of 221 :

The positive integer divisors of 221 that completely divides 221 are.

1, 13, 17, 221

Divisors of 490 :

The positive integer divisors of 490 that completely divides 490 are.

1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490

GCD of numbers is the greatest common divisor

So, the GCD (155, 157, 221, 490) = 1.

Given numbers are 155, 157, 221, 490

The list of prime factors of all numbers are

Prime factors of 155 are 5 x 31

Prime factors of 157 are 157

Prime factors of 221 are 13 x 17

Prime factors of 490 are 2 x 5 x 7 x 7

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

Given numbers are 155, 157, 221, 490

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

Apply this formula for all numbers.

Step1:

LCM(155, 157) = 24335

GCD(155, 157) = ( 155 x 157 ) / 24335

= 155 / 157

= 155

Step2:

LCM(1, 221) = 221

GCD(1, 221) = ( 1 x 221 ) / 221

= 1 / 221

= 1

Step3:

LCM(1, 490) = 490

GCD(1, 490) = ( 1 x 490 ) / 490

= 1 / 490

= 1

So, Greatest Common Divisor of 155, 157, 221, 490 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 781, 572, 987, 869
• GCD of 904, 274, 181, 699
• GCD of 468, 199, 474, 693
• GCD of 944, 998, 407, 725
• GCD of 118, 686, 685, 595

Given numbers are 155, 157, 221, 490
The greatest common divisor of numbers 155, 157, 221, 490 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 155, 157, 221, 490 is 1.

1. What is the GCD of 155, 157, 221, 490?

GCD of given numbers 155, 157, 221, 490 is 1

2. How to calculate the greatest common divisor of 155, 157, 221, 490?

We can find the highest common divisor of 155, 157, 221, 490 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, 157, 221, 490 i.e 1.

3. How can I use the GCD of 155, 157, 221, 490Calculator?

Out the numbers 155, 157, 221, 490 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.