A176802 - cp's OEIS frontend

A176802 a(n) = the smallest natural numbers m such that product of harmonic mean of the divisors of n and harmonic mean of the divisors of m are integers.

n	a(n)
1	1
2	3
3	2
4	7
5	28
6	1
7	4
8	420
9	182
10	27
11	270
12	14
13	126
14	4
15	6
16	31
17	1638
18	91
19	980
20	7
21	32
22	84
23	30240
24	15
25	248
26	63
27	10
28	1
29	8190
30	3
31	16
32	21
33	672
34	819
35	4
36	60515
37	117800
38	420
39	840
40	84
41	55860
42	4
43	332640
44	42
45	182
46	1638
47	30240
48	62
49	380
50	744
51	270
52	4655
53	167400
54	5
55	54
56	60
57	980

[1, 3, 2, 7, 28, 1, 4, 420, 182, 27, 270, 14, 126, 4, 6, 31, 1638, 91, 980, 7, 32, 84, 30240, 15, 248, 63, 10, 1, 8190, 3, 16, 21, 672, 819, 4, 60515, 117800, 420, 840, 84, 55860, 4, 332640, 42, 182, 1638, 30240, 62, 380, 744, 270, 4655, 167400, 5, 54, 60, 980]

cp's OEIS Frontend

A176802 a(n) = the smallest natural numbers m such that product of harmonic mean of the divisors of n and harmonic mean of the divisors of m are integers.

Table of values

List of values