A029940 - cp's OEIS frontend

A029940 a(n) = Product_{d|n} phi(d).

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	4
7	6
8	8
9	12
10	16
11	10
12	32
13	12
14	36
15	64
16	64
17	16
18	144
19	18
20	256
21	144
22	100
23	22
24	1024
25	80
26	144
27	216
28	864
29	28
30	4096
31	30
32	1024
33	400
34	256
35	576
36	13824
37	36
38	324
39	576
40	16384
41	40
42	20736
43	42
44	4000
45	9216
46	484
47	46
48	131072
49	252
50	6400
51	1024
52	6912
53	52
54	46656
55	1600

[1, 1, 2, 2, 4, 4, 6, 8, 12, 16, 10, 32, 12, 36, 64, 64, 16, 144, 18, 256, 144, 100, 22, 1024, 80, 144, 216, 864, 28, 4096, 30, 1024, 400, 256, 576, 13824, 36, 324, 576, 16384, 40, 20736, 42, 4000, 9216, 484, 46, 131072, 252, 6400, 1024, 6912, 52, 46656, 1600]

cp's OEIS Frontend

A029940 a(n) = Product_{d|n} phi(d).

Table of values

List of values