A283160 - cp's OEIS frontend

A283160 Numbers k such that there is exactly one solution to the equation sigma(x) = 2^k, where sigma(x) denotes the sum of the divisors of x.

n	a(n)
1	0
2	2
3	3
4	8
5	9
6	13
7	14
8	16
9	465
10	467
11	468
12	472
13	473
14	478
15	479
16	481
17	521
18	523
19	524
20	529
21	530
22	534
23	535
24	537
25	1072
26	1074
27	1075
28	1079
29	1080
30	1085
31	1086
32	1088
33	1128
34	1130
35	1131
36	1136
37	1137
38	1141
39	1142
40	1144
41	1744
42	1746
43	1747
44	1751
45	1752
46	1757
47	1758
48	1760
49	1800
50	1802
51	1803
52	1808
53	1809
54	1813
55	1814

[0, 2, 3, 8, 9, 13, 14, 16, 465, 467, 468, 472, 473, 478, 479, 481, 521, 523, 524, 529, 530, 534, 535, 537, 1072, 1074, 1075, 1079, 1080, 1085, 1086, 1088, 1128, 1130, 1131, 1136, 1137, 1141, 1142, 1144, 1744, 1746, 1747, 1751, 1752, 1757, 1758, 1760, 1800, 1802, 1803, 1808, 1809, 1813, 1814]

cp's OEIS Frontend

A283160 Numbers k such that there is exactly one solution to the equation sigma(x) = 2^k, where sigma(x) denotes the sum of the divisors of x.

Table of values

List of values