A277173 - cp's OEIS frontend

A277173 Numbers m such that b^sigma(m) == b^phi(m) == b^numdiv(m) == b^m (mod m) for every integer b.

n	a(n)
1	1
2	2
3	6
4	12
5	24
6	60
7	120
8	126
9	240
10	420
11	480
12	504
13	672
14	780
15	1248
16	1260
17	2340
18	2520
19	3360
20	4680
21	5040
22	5460
23	6240
24	6552
25	8160
26	8736
27	9360
28	10080
29	11424
30	16380
31	21216
32	26208
33	27360
34	32760
35	38304
36	43680
37	57120
38	65520
39	71136
40	74592
41	106080
42	131040
43	147168
44	148512
45	171360
46	191520
47	202464
48	325920
49	355680
50	372960

[1, 2, 6, 12, 24, 60, 120, 126, 240, 420, 480, 504, 672, 780, 1248, 1260, 2340, 2520, 3360, 4680, 5040, 5460, 6240, 6552, 8160, 8736, 9360, 10080, 11424, 16380, 21216, 26208, 27360, 32760, 38304, 43680, 57120, 65520, 71136, 74592, 106080, 131040, 147168, 148512, 171360, 191520, 202464, 325920, 355680, 372960]

cp's OEIS Frontend

A277173 Numbers m such that b^sigma(m) == b^phi(m) == b^numdiv(m) == b^m (mod m) for every integer b.

Table of values

List of values