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The factors of 100 are: 1, 2, 4, 5, 10, 20, 25, 50, 10.

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Q: List all the proper factors of 100?

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2 and 5 are the prime factors of 100.

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

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

The numbers for which the sum of its proper factors is 1 less than the number is the powers of 2; less than 50 these are: 2, 4, 8, 16 & 32.

47 is a prime, so its only factors are 1 and 47. Prime numbers don't have "proper" factors.

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The list of factors of 50.

The proper factors of a number are all its factors except itself. Sometimes, the number 1 is also excluded. So, the proper factors of 6 are either 1, 2, and 3, or if excluding the number 1, they are 2 and 3. (If your instructor distinguishes between proper factors and proper divisors, then proper factors are all the factors of a number except 1 and itself, while proper divisors are all the factors of a number except itself, but often proper factors is the only term used, so check whether 1 is included in the definition you are using.)The list of factors in the question "What are the factors of the numbers from 1 to 100" (see link below) includes both 1 and the number itself, but if you remove the number itself, and the 1 if it is excluded in the definition of proper factor that you are using, you will have the complete list of proper factors.The prime numbers, which only have themselves and 1 as factors, are in bold in the list of factors on that page. Their proper factors are either the number 1, or if 1 is excluded, they have no proper factors.Short List of Proper Factors:As an example, here are the proper factors (including 1, which is sometimes used and sometimes not) for the first 10 numbers:1: No proper factors2: 13: 14: 1, 25: 16: 1, 2, 37: 18: 1, 2, 49: 1, 310: 1, 2, 5A less unwieldy versionIn practice, it seems unlikely that anyone wants you to continue the above list to 100. (That would be 3 sides of handwritten A4 paper.) Maybe they only wanted to know which numbers appear in the list of proper factors. For example, the proper factors of numbers from 1 to 10 are 1, 2, 3, 4 and 5 (as you can see above).

The prime factors of 100 are 2 and 5 and 2*2*5*5 = 100

All even numbers greater than 2 have even proper factors, since they all have 2 as a proper factor.

2 and 5 are the prime factors of 100.

2, 3, 5, 6, 10, 15

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.

All of the positive whole-number factors of 100 are . . . 1, 2, 4, 5, 10, 20, 25, 50, and 100 .

The factors of 100 are: 1, 2, 4, 5, 10, 20, 25, 50 and 100.To find all the factors of 100 list all the factor pairs of 100.1 x 1002 x 504 x 255 x 2010 x 10The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, 100.

No. Some proper factors are prime.

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

Proper factors are all the factors of a number except the number itself. To find the factors of a number, start with 1 and list the factor pairs of the number. For example, the factor pairs of 18 are:1 x 182 x 93 x 6The factors of 18 are: 1, 2, 3, 6, 9, 18.The proper factors are: 1, 2, 3, 6, 9.