The proper factors of 64 are 2, 4, 8, 16 and 32. For proper factors of a number exclude 1 and the number itself from the list of factors.
1, 3, 5, 7, 15, 21, 35, 105
The factors of 35 are 1, 5, 7, and 35.
The factors of -35 are: -1 -5 -7 -35
The factors for 25 are 1,5, and 25 The factors for 35 are 1,5, and 35 The common factors for 25 and 35 are 1, and 5
The proper factors of 35 are 5 and 7.
1, 5, 7, and 35 are the factors of 35. The proper factors are 5 and 7.
The proper factors of 35 are 5 and 7
1, 5, 7 and 35 are the factors of 35. The proper factors are 5 and 7.
1,5,7, and 35
The proper factors of 64 are 2, 4, 8, 16 and 32. For proper factors of a number exclude 1 and the number itself from the list of factors.
That is a list of the proper divisors of 588. Most definitions of proper factors do not include the number 1.
6
Some people would call that the proper factors. Others maintain that proper factors do not include the number 1.
30: 2, 3, 5, 6, 10, 15 35: 5, 7
70: 2, 5, 7, 10, 14, 35
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).