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A132652
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Sum of divisors of n, sigma(n) raised to power sigma(n).
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0
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1, 27, 256, 823543, 46656, 8916100448256, 16777216, 437893890380859375, 302875106592253, 39346408075296537575424, 8916100448256, 33145523113253374862572728253364605812736, 11112006825558016, 1333735776850284124449081472843776
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OFFSET
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1,2
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LINKS
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FORMULA
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a(n) = sigma(n)^sigma(n).
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EXAMPLE
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a(4) = 823543 because sigma(4) = 1 + 2 + 4 = 7 and we can write 823543 = 7^7 or 823543 = 7*7*7*7*7*7*7.
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MATHEMATICA
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Table[DivisorSigma[1, n]^DivisorSigma[1, n], {n, 14}] (* Stefano Spezia, Sep 10 2022 *)
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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