A066995 - cp's OEIS frontend

A066995 Numbers k such that sigma(k) divides k*phi(k).

n	a(n)
1	1
2	6
3	15
4	28
5	84
6	95
7	140
8	182
9	190
10	248
11	270
12	287
13	308
14	357
15	420
16	455
17	477
18	496
19	570
20	672
21	744
22	819
23	840
24	910
25	1199
26	1428
27	1488
28	1547
29	1638
30	1722
31	1848
32	1892
33	2295
34	2398
35	2480
36	2660
37	2730
38	3339
39	3417
40	3472
41	3515
42	3596
43	3640
44	3720
45	3780
46	3956
47	4064
48	4095

[1, 6, 15, 28, 84, 95, 140, 182, 190, 248, 270, 287, 308, 357, 420, 455, 477, 496, 570, 672, 744, 819, 840, 910, 1199, 1428, 1488, 1547, 1638, 1722, 1848, 1892, 2295, 2398, 2480, 2660, 2730, 3339, 3417, 3472, 3515, 3596, 3640, 3720, 3780, 3956, 4064, 4095]

cp's OEIS Frontend

A066995 Numbers k such that sigma(k) divides k*phi(k).

Table of values

List of values