Jon Perry on Mon, 22 Mar 2004 18:07:03 +0100

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? sigma(4,1.5)
  ***   this should be an integer: sigma(4,1.5)

? ?sigma
sigma(x,{k=1}): sum of the k-th powers of the divisors of x. k is optional
if omitted is assumed to be equal to 1.

Is there a technical reason for k being an integer?

Jon Perry
BrainBench MVP for HTML and JavaScript