I have to find a formula for the function

where

And I want to ensure that I understand the function correctly, so I will illustrate my understanding by examples with numbers

2nd example

Am I correct?

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- Nov 15th 2010, 02:20 AMI-ThinkSum of divisor function
I have to find a formula for the function

where

And I want to ensure that I understand the function correctly, so I will illustrate my understanding by examples with numbers

2nd example

Am I correct? - Nov 19th 2010, 05:12 PMdwsmith
The sum of divisors function adds up the divisors: 1 + 12 + 2 + 6 + 3 + 4 = 28

- Nov 20th 2010, 12:06 AMCaptainBlack