Search: id:A095112
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%I A095112
%S A095112 0,1,1,3,1,5,1,7,4,7,1,13,1,9,8,15,1,17,1,19,10,13,1,29,6,15,13,25,1,31,
%T A095112 1,31,14,19,12,43,1,21,16,43,1,41,1,37,29,25,1,61,8,37,20,43,1,53,16,57,
%U A095112 22,31,1,77,1,33,37,63,18,61,1,55,26,59,1,95,1,39,43,61,18,71,1,91,40
%N A095112 a(n) = sum of n/k over all prime powers k>1 which divide n.
%H A095112 Leroy Quet, <a href="http://www.prism-of-spirals.net/">Home Page</a> 
               (listed in lieu of email address)
%e A095112 The prime power divisors of 24 are 2, 4, 8 and 3, so a(24) = 24/2 + 24/
               4 + 24/8 + 24/3 = 29.
%t A095112 a[n_]:=Plus@@(n/Flatten[ #[[1]]^Range[ #[[2]]]&/@FactorInteger[n]])
%Y A095112 Sequence in context: A118402 A122383 A136180 this_sequence A160596 A092319 
               A147410
%Y A095112 Adjacent sequences: A095109 A095110 A095111 this_sequence A095113 A095114 
               A095115
%K A095112 nonn
%O A095112 1,4
%A A095112 Dean Hickerson (dean.hickerson(AT)yahoo.com), following a suggestion 
               of Leroy Quet May 28 2004

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