A359958 a(n) is the smallest number with exactly n divisors that are greater than or equal to n.

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

Author

Ilya Gutkovskiy, Jan 19 2023

Keywords

• nonn

Links

• Index entries for sequences related to divisors of numbers

Crossrefs

Cf. A005179, A359955, A359956, A359957.

Programs

PARI

a(n) = my(k=1); while (sumdiv(k, d, (d>=n)) != n, k++); k; \\ Michel Marcus, Jan 20 2023