Search: id:A033634
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%I A033634
%S A033634 1,3,4,3,6,12,8,11,4,18,12,12,14,24,24,11,18,12,20,18,32,36,24,44,6,42,
%T A033634 31,24,30,72
%N A033634 OddPowerSigma(n) = sum of odd power divisors of n
%F A033634 If n = Product p(i)^r(i) then opsigma(n) = Product (1+(p(i)^(s(i)+2)-p(i))/
               (p(i)^2-1)), where si=ri when ri is odd, si=ri-1 when ri is even.
%Y A033634 Sequence in context: A109506 A000113 A069915 this_sequence A111970 A141730 
               A127737
%Y A033634 Adjacent sequences: A033631 A033632 A033633 this_sequence A033635 A033636 
               A033637
%K A033634 nonn,mult
%O A033634 1,2
%A A033634 Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp)

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