What is the Greatest Common Factor of 20618 and 20634?

Greatest common factor (GCF) of 20618 and 20634 is 2.

GCF(20618,20634) = 2

We will now calculate the prime factors of 20618 and 20634, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20618 and 20634.

How to find the GCF of 20618 and 20634?

We will first find the prime factorization of 20618 and 20634. After we will calculate the factors of 20618 and 20634 and find the biggest common factor number .

Step-1: Prime Factorization of 20618

Prime factors of 20618 are 2, 13, 61. Prime factorization of 20618 in exponential form is:

20618 = 2¹ × 13² × 61¹

Step-2: Prime Factorization of 20634

Prime factors of 20634 are 2, 3, 19, 181. Prime factorization of 20634 in exponential form is:

20634 = 2¹ × 3¹ × 19¹ × 181¹

Step-3: Factors of 20618

List of positive integer factors of 20618 that divides 20618 without a remainder.

1, 2, 13, 26, 61, 122, 169, 338, 793, 1586, 10309

Step-4: Factors of 20634

List of positive integer factors of 20634 that divides 20618 without a remainder.

1, 2, 3, 6, 19, 38, 57, 114, 181, 362, 543, 1086, 3439, 6878, 10317

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20618 and 20634. The biggest common factor number is the GCF number.
So the greatest common factor 20618 and 20634 is 2.

Also check out the Least Common Multiple of 20618 and 20634