A291457 - cp's OEIS frontend

A291457 Numbers n having a proper divisor d such that sigma(n) - kd = kn. Case k = 3.

n	a(n)
1	180
2	240
3	360
4	420
5	480
6	540
7	600
8	660
9	780
10	840
11	1080
12	1320
13	1560
14	1890
15	1920
16	2016
17	2040
18	2184
19	2280
20	2352
21	2376
22	2688
23	2760
24	2856
25	3000
26	3192
27	3360
28	3480
29	3720
30	3744
31	4284
32	4320
33	4440
34	4680
35	4704
36	4896
37	4920
38	5160
39	5292
40	5640
41	5796
42	6048
43	6360
44	6552
45	7080
46	7128

[180, 240, 360, 420, 480, 540, 600, 660, 780, 840, 1080, 1320, 1560, 1890, 1920, 2016, 2040, 2184, 2280, 2352, 2376, 2688, 2760, 2856, 3000, 3192, 3360, 3480, 3720, 3744, 4284, 4320, 4440, 4680, 4704, 4896, 4920, 5160, 5292, 5640, 5796, 6048, 6360, 6552, 7080, 7128]

cp's OEIS Frontend

A291457 Numbers n having a proper divisor d such that sigma(n) - kd = kn. Case k = 3.

Table of values

List of values

cp's OEIS Frontend

A291457 Numbers n having a proper divisor d such that sigma(n) - k*d = k*n. Case k = 3.

Table of values

List of values

A291457 Numbers n having a proper divisor d such that sigma(n) - kd = kn. Case k = 3.