A300658 - cp's OEIS frontend

A300658 Numbers m that divide sigma(sigma(m) - m) where sigma is the sum of divisors function (A000203).

n	a(n)
1	4
2	6
3	8
4	28
5	32
6	36
7	78
8	84
9	128
10	168
11	252
12	496
13	504
14	532
15	756
16	1488
17	2808
18	3720
19	4464
20	5928
21	8128
22	8192
23	13392
24	24384
25	61236
26	73152
27	78120
28	131072
29	183708
30	217728
31	219456
32	425880
33	458640
34	524288
35	1084752
36	1834560
37	2204280
38	3254256
39	6120432
40	6386688
41	11007360

[4, 6, 8, 28, 32, 36, 78, 84, 128, 168, 252, 496, 504, 532, 756, 1488, 2808, 3720, 4464, 5928, 8128, 8192, 13392, 24384, 61236, 73152, 78120, 131072, 183708, 217728, 219456, 425880, 458640, 524288, 1084752, 1834560, 2204280, 3254256, 6120432, 6386688, 11007360]

cp's OEIS Frontend

A300658 Numbers m that divide sigma(sigma(m) - m) where sigma is the sum of divisors function (A000203).

Table of values

List of values