GCD of 220, 420, 770, 251 Calculator

Given Input numbers are 220, 420, 770, 251

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

Divisors of 220 :

The positive integer divisors of 220 that completely divides 220 are.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

Divisors of 420 :

The positive integer divisors of 420 that completely divides 420 are.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

Divisors of 770 :

The positive integer divisors of 770 that completely divides 770 are.

1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770

Divisors of 251 :

The positive integer divisors of 251 that completely divides 251 are.

1, 251

GCD of numbers is the greatest common divisor

So, the GCD (220, 420, 770, 251) = 1.

Given numbers are 220, 420, 770, 251

The list of prime factors of all numbers are

Prime factors of 220 are 2 x 2 x 5 x 11

Prime factors of 420 are 2 x 2 x 3 x 5 x 7

Prime factors of 770 are 2 x 5 x 7 x 11

Prime factors of 251 are 251

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

Given numbers are 220, 420, 770, 251

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

Apply this formula for all numbers.

Step1:

LCM(220, 420) = 4620

GCD(220, 420) = ( 220 x 420 ) / 4620

= 220 / 420

= 220

Step2:

LCM(20, 770) = 1540

GCD(20, 770) = ( 20 x 770 ) / 1540

= 20 / 770

= 20

Step3:

LCM(10, 251) = 2510

GCD(10, 251) = ( 10 x 251 ) / 2510

= 10 / 251

= 10

So, Greatest Common Divisor of 220, 420, 770, 251 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 228, 762, 208, 731
• GCD of 183, 816, 753, 317
• GCD of 948, 805, 427, 757
• GCD of 763, 958, 305, 185
• GCD of 266, 883, 231, 877

Given numbers are 220, 420, 770, 251
The greatest common divisor of numbers 220, 420, 770, 251 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 220, 420, 770, 251 is 1.

1. What is the GCD of 220, 420, 770, 251?

GCD of given numbers 220, 420, 770, 251 is 1

2. How to calculate the greatest common divisor of 220, 420, 770, 251?

We can find the highest common divisor of 220, 420, 770, 251 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 220, 420, 770, 251 i.e 1.

3. How can I use the GCD of 220, 420, 770, 251Calculator?

Out the numbers 220, 420, 770, 251 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.