A324500 - cp's OEIS frontend

A324500 a(n) = denominator of Sum_{d|n} sigma(d)/tau(d) where sigma(k) = the sum of the divisors of k (A000203) and tau(k) = the number of divisors of k (A000005).

n	a(n)
1	1
2	2
3	1
4	6
5	1
6	2
7	1
8	12
9	3
10	1
11	1
12	2
13	1
14	2
15	1
16	60
17	1
18	3
19	1
20	3
21	1
22	2
23	1
24	4
25	3
26	1
27	3
28	6
29	1
30	1
31	1
32	60
33	1
34	1
35	1
36	9
37	1
38	2
39	1
40	3
41	1
42	2
43	1
44	6
45	3
46	2
47	1
48	20
49	1
50	6
51	1
52	3
53	1
54	3
55	1
56	12
57	1
58	1
59	1
60	1
61	1
62	2
63	3
64	420
65	1
66	2
67	1
68	3
69	1
70	1
71	1
72	18
73	1
74	1
75	1
76	6
77	1
78	1
79	1
80	15
81	15
82	1
83	1
84	2

[1, 2, 1, 6, 1, 2, 1, 12, 3, 1, 1, 2, 1, 2, 1, 60, 1, 3, 1, 3, 1, 2, 1, 4, 3, 1, 3, 6, 1, 1, 1, 60, 1, 1, 1, 9, 1, 2, 1, 3, 1, 2, 1, 6, 3, 2, 1, 20, 1, 6, 1, 3, 1, 3, 1, 12, 1, 1, 1, 1, 1, 2, 3, 420, 1, 2, 1, 3, 1, 1, 1, 18, 1, 1, 1, 6, 1, 1, 1, 15, 15, 1, 1, 2]

cp's OEIS Frontend

A324500 a(n) = denominator of Sum_{d|n} sigma(d)/tau(d) where sigma(k) = the sum of the divisors of k (A000203) and tau(k) = the number of divisors of k (A000005).

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	6
5	1
6	2
7	1
8	12
9	3
10	1
11	1
12	2
13	1
14	2
15	1
16	60
17	1
18	3
19	1
20	3
21	1
22	2
23	1
24	4
25	3
26	1
27	3
28	6
29	1
30	1
31	1
32	60
33	1
34	1
35	1
36	9
37	1
38	2
39	1
40	3
41	1
42	2
43	1
44	6
45	3
46	2
47	1
48	20
49	1
50	6
51	1
52	3
53	1
54	3
55	1
56	12
57	1
58	1
59	1
60	1
61	1
62	2
63	3
64	420
65	1
66	2
67	1
68	3
69	1
70	1
71	1
72	18
73	1
74	1
75	1
76	6
77	1
78	1
79	1
80	15
81	15
82	1
83	1
84	2

n	a(n)
1	1
2	2
3	1
4	6
5	1
6	2
7	1
8	12
9	3
10	1
11	1
12	2
13	1
14	2
15	1
16	60
17	1
18	3
19	1
20	3
21	1
22	2
23	1
24	4
25	3
26	1
27	3
28	6
29	1
30	1
31	1
32	60
33	1
34	1
35	1
36	9
37	1
38	2
39	1
40	3
41	1
42	2
43	1
44	6
45	3
46	2
47	1
48	20
49	1
50	6
51	1
52	3
53	1
54	3
55	1
56	12
57	1
58	1
59	1
60	1
61	1
62	2
63	3
64	420
65	1
66	2
67	1
68	3
69	1
70	1
71	1
72	18
73	1
74	1
75	1
76	6
77	1
78	1
79	1
80	15
81	15
82	1
83	1
84	2

n	a(n)
1	1
2	2
3	1
4	6
5	1
6	2
7	1
8	12
9	3
10	1
11	1
12	2
13	1
14	2
15	1
16	60
17	1
18	3
19	1
20	3
21	1
22	2
23	1
24	4
25	3
26	1
27	3
28	6
29	1
30	1
31	1
32	60
33	1
34	1
35	1
36	9
37	1
38	2
39	1
40	3
41	1
42	2
43	1
44	6
45	3
46	2
47	1
48	20
49	1
50	6
51	1
52	3
53	1
54	3
55	1
56	12
57	1
58	1
59	1
60	1
61	1
62	2
63	3
64	420
65	1
66	2
67	1
68	3
69	1
70	1
71	1
72	18
73	1
74	1
75	1
76	6
77	1
78	1
79	1
80	15
81	15
82	1
83	1
84	2