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A359955
a(n) is the smallest number with exactly n divisors that are greater than or equal to 4.
3
4, 8, 12, 20, 24, 36, 48, 80, 60, 140, 192, 144, 120, 280, 180, 700, 240, 560, 1600, 5120, 360, 1120, 10000, 900, 960, 2240, 720, 2800, 840, 3080, 25600, 5184, 1260, 5600, 175175, 36864, 1680, 6160, 2880, 11200, 15360, 3600, 19600, 3705625, 2520, 12320, 6480, 70000
OFFSET
1,1
PROG
(PARI) a(n) = my(k=1); while (sumdiv(k, d, (d>=4)) != n, k++); k; \\ Michel Marcus, Jan 20 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Jan 19 2023
STATUS
approved