A334731 - cp's OEIS frontend

A334731 a(n) = Product_{d|n} gcd(sigma(d), pod(d)) where sigma(k) is the sum of divisors of k (A000203) and pod(k) is the product of divisors of k (A007955).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	12
7	1
8	1
9	1
10	2
11	1
12	48
13	1
14	4
15	3
16	1
17	1
18	36
19	1
20	4
21	1
22	4
23	1
24	576
25	1
26	2
27	1
28	224
29	1
30	5184
31	1
32	1
33	3
34	2
35	1
36	144
37	1
38	4
39	1
40	40
41	1
42	2304
43	1
44	16
45	9
46	4
47	1
48	2304
49	1
50	2
51	9
52	4
53	1
54	864
55	1
56	1792
57	1
58	2
59	1
60	995328
61	1
62	4
63	1
64	1
65	1
66	20736
67	1
68	4
69	3
70	128
71	1
72	5184
73	1
74	2

[1, 1, 1, 1, 1, 12, 1, 1, 1, 2, 1, 48, 1, 4, 3, 1, 1, 36, 1, 4, 1, 4, 1, 576, 1, 2, 1, 224, 1, 5184, 1, 1, 3, 2, 1, 144, 1, 4, 1, 40, 1, 2304, 1, 16, 9, 4, 1, 2304, 1, 2, 9, 4, 1, 864, 1, 1792, 1, 2, 1, 995328, 1, 4, 1, 1, 1, 20736, 1, 4, 3, 128, 1, 5184, 1, 2]

cp's OEIS Frontend

A334731 a(n) = Product_{d|n} gcd(sigma(d), pod(d)) where sigma(k) is the sum of divisors of k (A000203) and pod(k) is the product of divisors of k (A007955).

Table of values

List of values