Search: id:A074632
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%I A074632
%S A074632 1,20,64,500,729,1024,1280,4096,4352,14580,15625,32000,39168,46656,
%T A074632 47360,59049,65536,117649,144640,161024,262144,312500,364500,509184,
%U A074632 531441,746496,796797,933120,1000000,1180980,1184000,1449216,1771561
%N A074632 Sum of first, 2nd, 3rd, 4th and 5th powers of divisors of n are divisible 
               by sum of divisors of n.
%e A074632 n=20: s1=42,s2=546=13.42,s3=9198=219.42,s4=170898=4069.42, s5=3304182=78671.42
%Y A074632 See also A020487, A046841, A046870, A046871.
%Y A074632 Cf. A000203, A001157-A001160.
%Y A074632 Sequence in context: A159504 A117432 A033577 this_sequence A158444 A145191 
               A044158
%Y A074632 Adjacent sequences: A074629 A074630 A074631 this_sequence A074633 A074634 
               A074635
%K A074632 easy,nonn
%O A074632 1,2
%A A074632 Labos E. (labos(AT)ana.sote.hu), Aug 27 2002

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