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 A341045 Numbers k such that k divides A318996(k). 1
 1, 4, 6, 28, 45, 120, 496, 672, 6048, 8128, 14421, 30240, 32760, 523776, 2178540, 23569920, 26409026, 29270772, 30685402, 33550336, 45532800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..21. EXAMPLE a(2) = 4 is a term because A318996(4) = 4 is divisible by 4. a(3) = 6 is a term because A318996(6) = 0 is divisible by 6. MAPLE f:= proc(n) local s, D, t; D:= numtheory:-divisors(n); s:= convert(D, `+`); add(s mod t, t=D) end proc: select(t -> f(t) mod t = 0, [\$1..20000]); PROG (PARI) f(n) = my(sn = sigma(n)); sumdiv(n, d, sn % d); \\ A318996 isok(k) = !(f(k) % k); \\ Michel Marcus, Feb 03 2021 CROSSREFS Contains A007691. Cf. A318996. Sequence in context: A106286 A066293 A204385 * A050881 A229719 A122113 Adjacent sequences: A341042 A341043 A341044 * A341046 A341047 A341048 KEYWORD nonn,more AUTHOR J. M. Bergot and Robert Israel, Feb 03 2021 STATUS approved

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Last modified October 1 14:54 EDT 2023. Contains 365826 sequences. (Running on oeis4.)