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Since 9 is a factor of 81, all of its factors are common.

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8y ago
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9y ago

They are: 1,3,9

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Q: What are the common factors of 9 and 81?
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Related questions

What are the common factors of 81 and 63?

Factors of 63: 1, 3, 7, 9, 21 and 63.Factors of 81: 1, 3, 9, 27 and 81.Common factors are 1, 3 and 9.And another method is by finding the GCF of 63 and 81.The factors of GCF are the common factors of 63 and 81.GCF of 63 and 81 is 9. And factors of 9 are 1, 3 and 9.Instead of writing all factors of 63 and 81 it is better to find GCF and then its factors.


What are the common factors of 18 and 81?

The common factors of 18 and 81 are; 1, 3, and 9. The factors of 18 are; 1, 2, 3, 6, 9, and 18. The factors of 81 are 1, 3, 9, 27, and 81.


What are the common factors of 72 and 81?

The common factors of 72 and 81 are: 1, 3, and 9


What are the common factors of 81 and 99?

The common factors of 81 and 99 are: 1, 3, 9


What are the common factors of 36 and 81?

The common factors of 36 and 81 are: 1, 3, and 9


What are the common factors of 81?

The factors of 81 are 1, 3, 9, 27 and 81. For them to be common, they need to be compared to another set of factors.


What are the common factors of 81 and 108?

The common factors of 81 and 108 are: 1, 3, 9, and 27


What are the common factors of 81 and 135?

The common factors of 81 and 135 are: 1, 3, 9, and 27


What are all the common factors of 81?

The factors of 81 are 1, 3, 9, 27, 81. For them to be common, they need to be compared to another set of factors.


What are 81's common factors?

The factors of 81 are 1, 3, 9, 27, 81. For them to be common, they need to be compared to another set of factors.


What is the least common factor of 81 and 243?

The factors of 81 are 1, 3, 9, 27, and 81. The factors of 243 are 1, 3, 9, 27, 81, and 243. The common factors of 81 and 243 are 1, 3, 9, 27, and 81. Therefore, the least common factor (the smallest common factor) is 1.


Common factors of 81 36?

The factors of 81 are 1, 3, 9, 27, and 81. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The common factors of 81 and 36 are 1, 3, and 9.