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# What are the common factors of 4 and 18?

Updated: 4/28/2022 SmartyPants411

Lvl 1
5y ago

The common factors of 4 and 18 are 1 and 2.
The greatest common factor of 4 and 18 is 2.

Definition: A factor is a divisor - a number that will evenly divide into another number. The common factors of two or more numbers are all the factors that the numbers have in common. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.

Methods:
One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.
The factors of 4 are 1, 2, and 4.
The factors of 18 are 1, 2, 3, 6, 9, and 18.
The common factors are 1 and 2; the greatest common factor is 2.

The common factors and greatest common factor can also be calculated by identifying the common prime factors and multiplying them together to identify the greatest common factor, and then taking all the factors of it to determine the common factors.
The prime factors of 4 are 2 and 2.
The prime factors of 18 are 2, 3, and 3.
The prime factors in common are a single 2, so the greatest common factor is 2. The factors of 2 are 1 and 2, which are the common factors.
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Q: What are the common factors of 4 and 18?
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Still have questions?  Related questions

### What are the greatest common factors of 4 and 18?

The GCF of 4 and 18 is 2.

### What are the common factors of 4 18 and 27?

The only common factor of 4, 18, and 27 is 1.

### What are common factors of 412 and 18?

The factors of 18 are: 1, 2, 3, 6, 9, 18.The factors of 412 are: 1, 2, 4, 103, 206, 412.The common factors are: 1, 2

1 and 2

### What are the common factors for 18?

The common factors of 18 are: 1,2,3,6,9,18.

### What are the factors of 16 and 36?

The factors of 16 are 2, 4 and 8. The factors of 36 are 2, 4, 9, 12 and 18. The common factors are therefore 2 and 4. The common prime factor is 2.

### What are the common factors of 50 18 and 20 for Android what are the common factors of 15 18 and 12?

The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 20 are: 1, 2, 4, 5, 10, 20 The factors of 50 are: 1, 2, 5, 10, 25, 50 The common factors are: 1, 2 The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 15 are: 1, 3, 5, 15 The factors of 18 are: 1, 2, 3, 6, 9, 18 The common factors are: 1, 3

### Most factors out of 12 18 or 20?

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### Common factors for 18?

The factors of 18 are 1,2,3,6,9 and 18. For them to be common, they need to be compared to another set of factors.

### What are common factors of 18?

The factors of 18 are 1,2,3,6,9 and 18. For them to be common, they need to be compared to another set of factors.

### What are the common factors 36 and 54?

The factors of 36 are:1, 2, 3, 4, 6, 9, 12, 18, 36The factors of 54 are:1, 2, 3, 6, 9, 18, 27, 54The common factors are:1, 2, 3, 6, 9, 18

### What are the common factors of 18 28 and 34?

The factors of 18 are: 1, 2, 3, 6, 9, 18.The factors of 28 are: 1, 2, 4, 7, 14, 28.The factors of 34 are: 1, 2, 17, 34.The common factors are: 1, 2