Search: id:A053783
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%I A053783
%S A053783 1,6,28,140,728,1638,2184,3640,8008,8190,10920,18620,23808,23895,27846,
%T A053783 37128,47790,55860,69160,148960,166656,189810,237510,242060,316680,
%U A053783 334530,359600,406215,446880,484120,525690,669060,726180,1029952
%N A053783 (1+e)-harmonic numbers: harmonic mean of (1+e)-divisors is integral.
%C A053783 If n = Product p(i)^r(i), d = Product p(i)^s(i) and s(i) = 0 or s(i) 
               divides r(i), then d is a (1+e)-divisor of n.
%Y A053783 Cf. A001599, A049599, A051378.
%Y A053783 Sequence in context: A108051 A001599 A074247 this_sequence A110047 A163029 
               A045722
%Y A053783 Adjacent sequences: A053780 A053781 A053782 this_sequence A053784 A053785 
               A053786
%K A053783 easy,nonn
%O A053783 1,2
%A A053783 Naohiro Nomoto (6284968128(AT)geocities.co.jp), Apr 14 2001

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