Difference between revisions of "Sum of divisors"

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* {{BookReference|Handbook of mathematical functions|1964|Milton Abramowitz|author2=Irene A. Stegun|prev=findme|next=Sum of sum of divisors function equals product of Riemann zeta for Re(z) greater than k+1}}: $24.3.3 I.$
  
 
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[[Category:SpecialFunction]]
 
[[Category:SpecialFunction]]

Revision as of 22:14, 25 June 2016

The sum of positive divisors function, $\sigma_x$, is defined by $$\sigma_x(n) = \displaystyle\sum_{d|n} d^x,$$ where $d|n$ denotes that $d$ is a divisor of $n$.

Properties

References

Number theory functions