A119312 Smallest number having at least n divisors and a squarefree n-th divisor.

1, 2, 6, 6, 12, 30, 30, 30, 60, 90, 60, 210, 120, 210, 210, 210, 420, 630, 420, 630, 420, 630, 420, 1260, 840, 1320, 1260, 1680, 840, 2310, 1260, 2310, 1680, 2640, 5040, 3360, 5280, 2520, 4620, 5460, 4620, 6930, 4620, 6930, 4620, 6930, 4620, 9240, 10920

Offset: 1

Author

Reinhard Zumkeller, May 15 2006

Keywords

• nonn

Crossrefs

Cf. A005117, A087134, A119311.

See A221647 for other sequences giving the smallest number whose n-th divisor satisfies some condition.