Search: id:A073181
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%I A073181
%S A073181 1,3,4,3,6,12,8,3,4,18,12,16,14,24,24,3,18,12,20,22,32,36,24,16,6,42,4,
%T A073181 28,30,72,32,3,48,54,48,16,38,60,56,30,42,96,44,40,33,72,48,16,8,18,72,
%U A073181 46,54,12,72,36,80,90,60,108,62,96,41,3,84,144,68,58,96,144,72,16,74
%N A073181 Sum of divisors of n which are not greater than the square-free kernel 
               of n.
%C A073181 a(n) >= A048250(n).
%e A073181 The square-free kernel of 56=7*2^3 is 14=7*2 and the divisors <= 14 of 
               56 are {1, 2, 4, 7, 8, 14}, therefore a(56)=1+2+4+7+8+14=36.
%Y A073181 Cf. A000203, A073180, A073183.
%Y A073181 Sequence in context: A101684 A061800 A048250 this_sequence A046897 A109506 
               A000113
%Y A073181 Adjacent sequences: A073178 A073179 A073180 this_sequence A073182 A073183 
               A073184
%K A073181 nonn
%O A073181 1,2
%A A073181 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 19 2002

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