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What is the Greatest Common Factor of 36 and 72?

Greatest common factor (GCF) of 36 and 72 is 36.

GCF(36,72) = 36

We will now calculate the prime factors of 36 and 72, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 36 and 72.

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How to find the GCF of 36 and 72?

We will first find the prime factorization of 36 and 72. After we will calculate the factors of 36 and 72 and find the biggest common factor number .

Step-1: Prime Factorization of 36

Prime factors of 36 are 2, 3. Prime factorization of 36 in exponential form is:

36 = 22 × 32

Step-2: Prime Factorization of 72

Prime factors of 72 are 2, 3. Prime factorization of 72 in exponential form is:

72 = 23 × 32

Step-3: Factors of 36

List of positive integer factors of 36 that divides 36 without a remainder.

1, 2, 3, 4, 6, 9, 12, 18

Step-4: Factors of 72

List of positive integer factors of 72 that divides 36 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 36 and 72. The biggest common factor number is the GCF number.
So the greatest common factor 36 and 72 is 36.

Also check out the Least Common Multiple of 36 and 72

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