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A046839
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Numbers n such that the number of divisors of n divides the sum of cubes of divisors of n.
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1
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1, 3, 5, 6, 7, 11, 13, 14, 15, 17, 19, 20, 21, 22, 23, 27, 29, 30, 31, 33, 35, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 49, 51, 53, 54, 55, 56, 57, 59, 60, 61, 62, 64, 65, 66, 67, 68, 69, 70, 71, 73, 77, 78, 79, 83, 85, 86, 87, 89, 91, 92, 93, 94, 95, 96, 97, 99, 101, 102, 103
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| First 42 terms agree with A003601 but a[ 43 ]=64 is not present in A003601.
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
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EXAMPLE
| a[ 43 ] = 64. The sigma[ k,64 ] values for k=0,1,2,3 are as follows: 7,127,5461 and 299593. While 7 does not divide sum of divisors, 127, it divides the sum of d^3 values: Sum[ d^3 ]=299593=7*127*337
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CROSSREFS
| Cf. A003601, A020486.
Sequence in context: A023854 A092559 A064728 * A003601 A072600 A047582
Adjacent sequences: A046836 A046837 A046838 * A046840 A046841 A046842
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu)
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