A011775 - cp's OEIS frontend

A011775 Numbers k such that k divides phi(k) * sigma(k).

n	a(n)
1	1
2	6
3	18
4	24
5	28
6	40
7	54
8	72
9	84
10	96
11	117
12	120
13	135
14	162
15	196
16	200
17	216
18	224
19	234
20	252
21	270
22	288
23	360
24	384
25	468
26	486
27	496
28	540
29	588
30	600
31	640
32	648
33	672
34	756
35	775
36	819
37	864
38	891
39	936
40	1000
41	1080
42	1152
43	1350
44	1372
45	1458
46	1488
47	1521
48	1536
49	1550
50	1568
51	1638
52	1701
53	1764

[1, 6, 18, 24, 28, 40, 54, 72, 84, 96, 117, 120, 135, 162, 196, 200, 216, 224, 234, 252, 270, 288, 360, 384, 468, 486, 496, 540, 588, 600, 640, 648, 672, 756, 775, 819, 864, 891, 936, 1000, 1080, 1152, 1350, 1372, 1458, 1488, 1521, 1536, 1550, 1568, 1638, 1701, 1764]

cp's OEIS Frontend

A011775 Numbers k such that k divides phi(k) * sigma(k).

Table of values

List of values