A327624 - cp's OEIS frontend

A327624 Numbers m such that sigma(m)*phi(m) is a square but sigma(m)/phi(m) is not an integer.

n	a(n)
1	51
2	170
3	194
4	364
5	405
6	477
7	595
8	679
9	760
10	780
11	1023
12	1455
13	1463
14	1496
15	1512
16	1524
17	1674
18	1715
19	1731
20	1796
21	1804
22	2058
23	2080
24	2651
25	2754
26	2945
27	3192
28	3410
29	3534
30	3567
31	4381
32	4420
33	5044
34	5130
35	5670
36	5770
37	5784
38	5797
39	5822
40	5859
41	7600
42	8245

[51, 170, 194, 364, 405, 477, 595, 679, 760, 780, 1023, 1455, 1463, 1496, 1512, 1524, 1674, 1715, 1731, 1796, 1804, 2058, 2080, 2651, 2754, 2945, 3192, 3410, 3534, 3567, 4381, 4420, 5044, 5130, 5670, 5770, 5784, 5797, 5822, 5859, 7600, 8245]

cp's OEIS Frontend

A327624 Numbers m such that sigma(m)*phi(m) is a square but sigma(m)/phi(m) is not an integer.

Table of values

List of values