What is the Greatest Common Factor of 20761 and 20770?

Greatest common factor (GCF) of 20761 and 20770 is 1.

GCF(20761,20770) = 1

We will now calculate the prime factors of 20761 and 20770, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20761 and 20770.

How to find the GCF of 20761 and 20770?

We will first find the prime factorization of 20761 and 20770. After we will calculate the factors of 20761 and 20770 and find the biggest common factor number .

Step-1: Prime Factorization of 20761

Prime factors of 20761 are 13, 1597. Prime factorization of 20761 in exponential form is:

20761 = 13¹ × 1597¹

Step-2: Prime Factorization of 20770

Prime factors of 20770 are 2, 5, 31, 67. Prime factorization of 20770 in exponential form is:

20770 = 2¹ × 5¹ × 31¹ × 67¹

Step-3: Factors of 20761

List of positive integer factors of 20761 that divides 20761 without a remainder.

1, 13, 1597

Step-4: Factors of 20770

List of positive integer factors of 20770 that divides 20761 without a remainder.

1, 2, 5, 10, 31, 62, 67, 134, 155, 310, 335, 670, 2077, 4154, 10385

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20761 and 20770. The biggest common factor number is the GCF number.
So the greatest common factor 20761 and 20770 is 1.

Also check out the Least Common Multiple of 20761 and 20770