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The proper factors of a number are all the factors less than itself, so the proper factors of 126 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, and 63. In some cases, the number 1 is excluded from the list of proper factors, too.

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16y ago

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Related Questions

Is 126 an odd number?

Actually, no! 126 is an even number because it factors up with 2.


Which number has 2 7 and 9 as its factors?

126


What the prime factors of the number 126?

2, 3 and 7


Why is the set of factors of a number not the same as the proper factors of that number?

The proper factors of a number do not include one and the number itself.


What are proper factors of a certain number?

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


What numbers do not include the number itself?

the proper factors are the factors of a number not including the number itself, or 1.


What is the difference between the factors and the proper factors of a number?

The proper factors are the regular factors without one and the number itself.


What number has 2 7 and 9 as factors?

Any multiple of 126.


What is the prime factorization of the number in the list which is a multiple of 7 48 72 126?

First, you have to find the number that is a multiple of 7. That number is 126 because 7 x 18 = 126. Then, you need to find the prime factorization. You can do that by starting with any factor pair of 126 and keep factoring the composite factors until all factors are prime. 126: 2 x 61 Since 2 and 61 are prime, that is the prime factorization of 126.


Why is the set of factors of a number not the same as the set of proper factors of the number?

The set of factors includes one and the number itself. Proper factors do not include those two.


Does three have proper factors?

No, no prime number has proper factors.


What are the proper factors for the number 1?

One has no proper factors.