A073082 - cp's OEIS frontend

A073082 Numbers n such that sum k/d(k) is an integer, where d(k) is the k-th divisor of n (the divisors of n are in increasing order).

n	a(n)
1	1
2	2
3	9
4	10
5	39
6	348
7	1272
8	10682
9	18275
10	414912
11	5606336
12	8712340
13	20920564
14	47201552
15	140142814
16	240574848
17	5459371212
18	16993264107
19	22955387784
20	23807694876
21	33482496720

[1, 2, 9, 10, 39, 348, 1272, 10682, 18275, 414912, 5606336, 8712340, 20920564, 47201552, 140142814, 240574848, 5459371212, 16993264107, 22955387784, 23807694876, 33482496720]

cp's OEIS Frontend

A073082 Numbers n such that sum k/d(k) is an integer, where d(k) is the k-th divisor of n (the divisors of n are in increasing order).

Table of values

List of values