A289412 - cp's OEIS frontend

A289412 a(n) = denominator of (sigma(n) / phi(n)).

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

[1, 1, 1, 2, 2, 1, 3, 4, 6, 2, 5, 1, 6, 1, 1, 8, 8, 2, 9, 4, 3, 5, 11, 2, 20, 2, 9, 3, 14, 1, 15, 16, 5, 8, 1, 12, 18, 3, 3, 8, 20, 1, 21, 5, 4, 11, 23, 4, 14, 20, 4, 12, 26, 3, 5, 1, 9, 14, 29, 2, 30, 5, 9, 32, 4, 5, 33, 16, 11, 1, 35, 8, 36, 6, 10, 9, 5, 1]

cp's OEIS Frontend

A289412 a(n) = denominator of (sigma(n) / phi(n)).

Table of values

List of values

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

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

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