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1, 2, 3, 5, 6, 10 and 15.

Some people do not consider 1 to be a proper factor.

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Q: What are all the proper factors of 30?
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Related questions

What is the proper factors between 1 and 30?

The proper factors of 30 are 2, 3, 5, 6, 10 and 15


Can you list all the proper factors of 30?

2, 3, 5, 6, 10, 15


What are proper factors?

Factors are the numbers that evenly divide into a given number.Proper factors are all the factors of the number except the number itself. Some definitions do not allow the number 1, either. If you distinguish between proper factors and proper divisors, proper factors do not include 1, but proper divisors do.Examples:All factors of 54 are 1, 2, 3, 6, 9, 18, 27, and 54.Proper factors of 54 are 2, 3, 6, 9, 18, and 27.Proper divisors of 54 are 1, 2, 3, 6, 9, 18, and 27.All factors of 9 are 1, 3, and 9.Proper factors of 9 are only 3.Proper divisors of 9 are 1 and 3.All factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.Proper factors of 30 are 2, 3, 5, 6, 10, and 15.Proper divisors of 30 are 1, 2, 3, 5, 6, 10, and 15.All factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, and 100.Proper factors of 100 are 2, 4, 5, 10, 20, 25, and 50.Proper divisors of 100 are 1, 2, 4, 5, 10, 20, 25, and 50.All factors of 120 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, and 120.Proper factors of 120 are 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, and 60.Proper divisors of 120 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, and 60.


Do all proper factors have some factors that you can multiply to get another proper factor?

No. Some proper factors are prime.


What are all the proper factors of 220?

The proper factors of 220 are 2,4,5,10,11,20,22,44,55,110


What number between 20 and 30 has a sum of all its proper factors equal to twice the number itself?

There aren't any numbers like that. You might be thinking of 28, which has a sum of all its factors equal to twice itself, making it a perfect number. Proper factors are a different set.


What are all the proper factors of 14?

The proper factors of 14 are 1, 2, and 7.


What are all the proper factors for 97?

The factors of 97 are 1 and 97. Prime numbers don't have "proper" factors.


What are proper factors of a certain number?

"Proper factors" are all of a number's factors except one and the number itself.


What are all the proper factors of 5?

5 is a prime number so it doesn't have proper factors


All the proper factors of 35?

1, 5, 7, and 35 are the factors of 35. The proper factors are 5 and 7.


What other factors does 30 and 60 have in common?

All the factors of 30.