What is the Greatest Common Factor of 20488 and 20492?

Greatest common factor (GCF) of 20488 and 20492 is 4.

GCF(20488,20492) = 4

We will now calculate the prime factors of 20488 and 20492, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20488 and 20492.

How to find the GCF of 20488 and 20492?

We will first find the prime factorization of 20488 and 20492. After we will calculate the factors of 20488 and 20492 and find the biggest common factor number .

Step-1: Prime Factorization of 20488

Prime factors of 20488 are 2, 13, 197. Prime factorization of 20488 in exponential form is:

20488 = 2³ × 13¹ × 197¹

Step-2: Prime Factorization of 20492

Prime factors of 20492 are 2, 47, 109. Prime factorization of 20492 in exponential form is:

20492 = 2² × 47¹ × 109¹

Step-3: Factors of 20488

List of positive integer factors of 20488 that divides 20488 without a remainder.

1, 2, 4, 8, 13, 26, 52, 104, 197, 394, 788, 1576, 2561, 5122, 10244

Step-4: Factors of 20492

List of positive integer factors of 20492 that divides 20488 without a remainder.

1, 2, 4, 47, 94, 109, 188, 218, 436, 5123, 10246

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20488 and 20492. The biggest common factor number is the GCF number.
So the greatest common factor 20488 and 20492 is 4.

Also check out the Least Common Multiple of 20488 and 20492