A081381 - cp's OEIS frontend

A081381 Numbers n such that n and tau(n) = A000005(n) have the same prime factors (ignoring multiplicity).

n	a(n)
1	1
2	2
3	8
4	9
5	12
6	18
7	72
8	80
9	96
10	108
11	128
12	288
13	448
14	486
15	625
16	720
17	768
18	864
19	972
20	1152
21	1200
22	1250
23	1620
24	1944
25	2000
26	2025
27	2560
28	4032
29	4050
30	5000
31	5625
32	6144
33	6561
34	6912
35	7500
36	7776
37	8748
38	9408
39	10800
40	11250
41	11264
42	12960
43	13122
44	16200
45	18000
46	18432
47	19440

[1, 2, 8, 9, 12, 18, 72, 80, 96, 108, 128, 288, 448, 486, 625, 720, 768, 864, 972, 1152, 1200, 1250, 1620, 1944, 2000, 2025, 2560, 4032, 4050, 5000, 5625, 6144, 6561, 6912, 7500, 7776, 8748, 9408, 10800, 11250, 11264, 12960, 13122, 16200, 18000, 18432, 19440]

cp's OEIS Frontend

A081381 Numbers n such that n and tau(n) = A000005(n) have the same prime factors (ignoring multiplicity).

Table of values

List of values