A076233 - cp's OEIS frontend

A076233 Numbers k such that sigma(k)/k and sigma_3(k)/k are both integers.

n	a(n)
1	1
2	6
3	120
4	496
5	672
6	8128
7	30240
8	32760
9	523776
10	23569920
11	33550336
12	459818240
13	1379454720
14	1476304896
15	8589869056
16	31998395520
17	51001180160
18	66433720320
19	137438691328
20	153003540480
21	403031236608
22	30823866178560
23	796928461056000
24	6088728021160320
25	14942123276641920

[1, 6, 120, 496, 672, 8128, 30240, 32760, 523776, 23569920, 33550336, 459818240, 1379454720, 1476304896, 8589869056, 31998395520, 51001180160, 66433720320, 137438691328, 153003540480, 403031236608, 30823866178560, 796928461056000, 6088728021160320, 14942123276641920]

cp's OEIS Frontend

A076233 Numbers k such that sigma(k)/k and sigma_3(k)/k are both integers.

Table of values

List of values