- #1
the_green_book
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Homework Statement
Choose an even number in the interval [100,199] and compute its orbit under the proper divisor function.
Homework Equations
Proper Divisor Function = σ(n) = Sum of all divisors of n, excluding n
The Attempt at a Solution
I am unsure what it means by "compute the orbit" of a number. I assumed that it meant that I had to evaluate the number for the given function. Doing that I have:
Chosen number = 138
σ(138) = 1 + 2 + 3 + 6 + 23 + 46 + 69 = 150
I am just not sure if that is what the question is asking. For anyone that has done orbits, is this essentially what I have to do?
Thank you for your assistance.