A095301 - cp's OEIS frontend

A095301 Numbers n such that there is some k < n with nsigma(k) = ksigma(n).

n	a(n)
1	28
2	140
3	200
4	224
5	234
6	270
7	308
8	364
9	476
10	496
11	532
12	600
13	644
14	672
15	700
16	812
17	819
18	868
19	936
20	1036
21	1148
22	1170
23	1204
24	1316
25	1400
26	1484
27	1488
28	1540
29	1638
30	1652
31	1708
32	1800
33	1820
34	1876
35	1988
36	2016
37	2044
38	2200
39	2212
40	2324
41	2380
42	2464
43	2480
44	2492
45	2574
46	2600

[28, 140, 200, 224, 234, 270, 308, 364, 476, 496, 532, 600, 644, 672, 700, 812, 819, 868, 936, 1036, 1148, 1170, 1204, 1316, 1400, 1484, 1488, 1540, 1638, 1652, 1708, 1800, 1820, 1876, 1988, 2016, 2044, 2200, 2212, 2324, 2380, 2464, 2480, 2492, 2574, 2600]

cp's OEIS Frontend

A095301 Numbers n such that there is some k < n with nsigma(k) = ksigma(n).

Table of values

List of values

cp's OEIS Frontend

A095301 Numbers n such that there is some k < n with n*sigma(k) = k*sigma(n).

Table of values

List of values

A095301 Numbers n such that there is some k < n with nsigma(k) = ksigma(n).