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A344754
Numbers k such that A344753(k) is a multiple of A048250(k).
5
1, 6, 24, 28, 54, 96, 112, 150, 153, 216, 294, 384, 448, 486, 496, 528, 672, 726, 864, 1014, 1080, 1377, 1500, 1536, 1734, 1792, 1944, 1980, 1984, 2112, 2166, 2250, 2376, 2688, 3174, 3456, 3672, 3750, 4320, 4374, 4560, 4753, 5046, 5292, 5766, 6000, 6048, 6144, 6720, 7168, 7776, 7936, 8128, 8214, 8448, 8700, 8736, 9024
OFFSET
1,2
PROG
(PARI)
A048250(n) = factorback(apply(p -> p+1, factor(n)[, 1]));
A344753(n) = sumdiv(n, d, (d<n)*(d+(issquarefree(n/d) * d)));
isA344754(n) = (0==(A344753(n)%A048250(n)));
CROSSREFS
Subsequences: A000396, A344755.
Cf. also A344700.
Sequence in context: A069235 A175200 A293453 * A364977 A336641 A336550
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 29 2021
STATUS
approved