A058073 - cp's OEIS frontend

A058073 Numbers k such that sigma(k+1) divides sigma(k), where sigma(k) is the sum of positive divisors of k.

n	a(n)
1	12
2	14
3	70
4	88
5	180
6	204
7	206
8	220
9	957
10	1334
11	1364
12	1634
13	1750
14	1888
15	2685
16	2958
17	2974
18	4364
19	8142
20	8632
21	9114
22	12000
23	14664
24	14841
25	18414
26	18762
27	18873
28	19358
29	20118
30	20145
31	20712
32	24957
33	25194
34	30996
35	33998
36	36566
37	42818
38	45520
39	47940

[12, 14, 70, 88, 180, 204, 206, 220, 957, 1334, 1364, 1634, 1750, 1888, 2685, 2958, 2974, 4364, 8142, 8632, 9114, 12000, 14664, 14841, 18414, 18762, 18873, 19358, 20118, 20145, 20712, 24957, 25194, 30996, 33998, 36566, 42818, 45520, 47940]

cp's OEIS Frontend

A058073 Numbers k such that sigma(k+1) divides sigma(k), where sigma(k) is the sum of positive divisors of k.

Table of values

List of values