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Producing a list of factor pairs is the easiest way.
1 x 100
2 x 50
4 x 25
5 x 20
10 x 10
As 10 is duplicated then there are 9 different numbers that are factors of 100.
If if it just a total number of factors that is required (rather than the values) then this can be obtained by stating the original number in terms of its prime factors.
100 = 22 x 52.
Add 1 to each exponent and obtain the product : (2 + 1)(2 + 1) = 3 x 3 = 9 ......which confirms the answer given above.
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Is There A Limit To How Many factor a whole number greater than 0 can have?
The limit is infinity if the factors do not have to be whole numbers. If you stipulate that the factors have to be whole numbers, then, yes, for each number, there is a limit to how many factors it has. For example, the number 4 has only 3 whole-number factors: 1, 2, and 4.
How many different whole number are the factors of 54?
1,2,3,6,9,18,27,54
How many different whole number factors does 75 have?
75's factors are: 1,3,5,15,25,75 so it has 6 factors
How many whole numbers from 1 to 100 are divisible by 3 different prime numbers?
Three.
How many whole numbers less than 2010 have exactly three factors?
14 (I think).
