Search: id:A107759
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%I A107759
%S A107759 1,4,5,6,7,20,9,10,11,28,13,30,15,36,35,18,19,44,21,42
%N A107759 (+2)UnitarySigma(n) : If n=Product p_i^r_i then (+2)Sigma(n)=Product 
               (2+p_i^r_i), (+2)UnitarySigma(1)=1.
%e A107759 (+2)UnitarySigma(12)=(2+3)*(2+4)=30.
%Y A107759 Cf. A107758, A054862.
%Y A107759 Sequence in context: A046300 A053738 A154787 this_sequence A161627 A030667 
               A030677
%Y A107759 Adjacent sequences: A107756 A107757 A107758 this_sequence A107760 A107761 
               A107762
%K A107759 nonn,mult
%O A107759 1,2
%A A107759 Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp), May 25 2005

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