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A359958
a(n) is the smallest number with exactly n divisors that are greater than or equal to n.
0
1, 4, 15, 20, 30, 48, 72, 160, 120, 210, 252, 240, 560, 360, 480, 864, 900, 720, 1200, 840, 1512, 1440, 1800, 2400, 2160, 3024, 2880, 4032, 3600, 2520, 3960, 5280, 6480, 9072, 14256, 6720, 8640, 5040, 12480, 7920, 7560, 9240, 11880, 16632, 20790, 10080, 12600, 15840
OFFSET
1,2
PROG
(PARI) a(n) = my(k=1); while (sumdiv(k, d, (d>=n)) != n, k++); k; \\ Michel Marcus, Jan 20 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Jan 19 2023
STATUS
approved