What is the Greatest Common Factor of 720 and 740?

Greatest common factor (GCF) of 720 and 740 is 20.

GCF(720,740) = 20

We will now calculate the prime factors of 720 and 740, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 720 and 740.

How to find the GCF of 720 and 740?

We will first find the prime factorization of 720 and 740. After we will calculate the factors of 720 and 740 and find the biggest common factor number .

Step-1: Prime Factorization of 720

Prime factors of 720 are 2, 3, 5. Prime factorization of 720 in exponential form is:

720 = 2⁴ × 3² × 5¹

Step-2: Prime Factorization of 740

Prime factors of 740 are 2, 5, 37. Prime factorization of 740 in exponential form is:

740 = 2² × 5¹ × 37¹

Step-3: Factors of 720

List of positive integer factors of 720 that divides 720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360

Step-4: Factors of 740

List of positive integer factors of 740 that divides 720 without a remainder.

1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 720 and 740. The biggest common factor number is the GCF number.
So the greatest common factor 720 and 740 is 20.

Also check out the Least Common Multiple of 720 and 740