Computing Ramanujan's tau function
Our program is simple-minded and uses the formula
when n is prime and the formula
Here σk(n) is the sum of the k-th powers of the divisors of n.
(See T.M. Apostol, Modular functions and Dirichlet series in number theory, 20-22, 140 and the MathWorld account.)
Last modified 16th August 2006
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