Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 40, 60 i.e. 20 largest integer by which both the numbers can be divided.

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Greatest common factor (GCF) of 40 and 60 is 20.

GCF(40,60) = 20


Prime Factorization of 40

2 40
2 20
2 10
5 5
1

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

40 = 23×51Prime Factorization of 60

2 60
2 30
3 15
5 5
1

Prime factors of 60 are 2,3,5. Prime factorization of 60 in exponential form is:

60 = 22×31×51∴ So by taking common prime factors GCF of 40 and 60 is 20
Factors of 40

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

1,2,4,5,8,10,20,40

Factors of 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60Greatest Common Factor

We found the factors and prime factorization of 40 and 60. The biggest common factor number is the GCF number. So the greatest common factor 40 and 60 is 20.

Also check out the Least Common Multiple of 40 and 60


1. What is the GCF of 40 and 60?

Answer: GCF of 40 and 60 is 20.

2. What are the Factors of 40?

Answer: Factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40. There are 8 integers that are factors of 40. The greatest factor of 40 is 40.

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3. What are the Factors of 60?

Answer: Factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60. There are 12 integers that are factors of 60. The greatest factor of 60 is 60.

4. How to Find the GCF of 40 and 60?

Answer:

Greatest Common Factor of 40 and 60 = 20

Step 1: Find the prime factorization of 40

40 = 2 x 2 x 2 x 5

Step 2: Find the prime factorization of 60

60 = 2 x 2 x 3 x 5

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = 2 x 2 x 5 = 20

Step 4: Therefore, the greatest common factor of 40 and 60 is 20


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