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A020476
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Numbers k such that the sum of divisors of k^3 is a cube.
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0
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OFFSET
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1,2
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COMMENTS
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WARNING: the listed terms are not proved to be in order. According to Basso (2017), it is not even proved that a(2) = 30154214043975990969. - Max Alekseyev, Mar 25 2023
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LINKS
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PROG
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(PARI) isok(n) = ispower(sigma(n^3), 3); \\ Michel Marcus, Jul 19 2017
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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