What is the Greatest Common Factor of 40 and 270?

Greatest common factor (GCF) of 40 and 270 is 10.

GCF(40,270) = 10

We will now calculate the prime factors of 40 and 270, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40 and 270.

How to find the GCF of 40 and 270?

We will first find the prime factorization of 40 and 270. After we will calculate the factors of 40 and 270 and find the biggest common factor number .

Step-1: Prime Factorization of 40

Prime factors of 40 are 2, 5. Prime factorization of 40 in exponential form is:

40 = 2³ × 5¹

Step-2: Prime Factorization of 270

Prime factors of 270 are 2, 3, 5. Prime factorization of 270 in exponential form is:

270 = 2¹ × 3³ × 5¹

Step-3: Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1, 2, 4, 5, 8, 10, 20

Step-4: Factors of 270

List of positive integer factors of 270 that divides 40 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40 and 270. The biggest common factor number is the GCF number.
So the greatest common factor 40 and 270 is 10.

Also check out the Least Common Multiple of 40 and 270