A348986 - cp's OEIS frontend

A348986 Denominator of ratio sigma(n) / A325973(n), where A325973 is the arithmetic mean of {sum of squarefree divisors} and {sum of unitary divisors}.

n	a(n)
1	1
2	1
3	1
4	4
5	1
6	1
7	1
8	2
9	7
10	1
11	1
12	4
13	1
14	1
15	1
16	10
17	1
18	7
19	1
20	4
21	1
22	1
23	1
24	2
25	16
26	1
27	2
28	4
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	31
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	4
45	7
46	1
47	1
48	10
49	29
50	16
51	1
52	4
53	1
54	2
55	1
56	2
57	1
58	1
59	1
60	4
61	1
62	1
63	7
64	34
65	1
66	1
67	1
68	4
69	1
70	1
71	1
72	17
73	1
74	1
75	16
76	4
77	1
78	1
79	1
80	10
81	43
82	1
83	1
84	4
85	1
86	1
87	1
88	2
89	1
90	7
91	1
92	4
93	1
94	1
95	1
96	2
97	1
98	29
99	7
100	74
101	1
102	1
103	1
104	2
105	1

[1, 1, 1, 4, 1, 1, 1, 2, 7, 1, 1, 4, 1, 1, 1, 10, 1, 7, 1, 4, 1, 1, 1, 2, 16, 1, 2, 4, 1, 1, 1, 2, 1, 1, 1, 31, 1, 1, 1, 2, 1, 1, 1, 4, 7, 1, 1, 10, 29, 16, 1, 4, 1, 2, 1, 2, 1, 1, 1, 4, 1, 1, 7, 34, 1, 1, 1, 4, 1, 1, 1, 17, 1, 1, 16, 4, 1, 1, 1, 10, 43, 1, 1, 4, 1, 1, 1, 2, 1, 7, 1, 4, 1, 1, 1, 2, 1, 29, 7, 74, 1, 1, 1, 2, 1]

cp's OEIS Frontend

A348986 Denominator of ratio sigma(n) / A325973(n), where A325973 is the arithmetic mean of {sum of squarefree divisors} and {sum of unitary divisors}.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	4
5	1
6	1
7	1
8	2
9	7
10	1
11	1
12	4
13	1
14	1
15	1
16	10
17	1
18	7
19	1
20	4
21	1
22	1
23	1
24	2
25	16
26	1
27	2
28	4
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	31
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	4
45	7
46	1
47	1
48	10
49	29
50	16
51	1
52	4
53	1
54	2
55	1
56	2
57	1
58	1
59	1
60	4
61	1
62	1
63	7
64	34
65	1
66	1
67	1
68	4
69	1
70	1
71	1
72	17
73	1
74	1
75	16
76	4
77	1
78	1
79	1
80	10
81	43
82	1
83	1
84	4
85	1
86	1
87	1
88	2
89	1
90	7
91	1
92	4
93	1
94	1
95	1
96	2
97	1
98	29
99	7
100	74
101	1
102	1
103	1
104	2
105	1

n	a(n)
1	1
2	1
3	1
4	4
5	1
6	1
7	1
8	2
9	7
10	1
11	1
12	4
13	1
14	1
15	1
16	10
17	1
18	7
19	1
20	4
21	1
22	1
23	1
24	2
25	16
26	1
27	2
28	4
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	31
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	4
45	7
46	1
47	1
48	10
49	29
50	16
51	1
52	4
53	1
54	2
55	1
56	2
57	1
58	1
59	1
60	4
61	1
62	1
63	7
64	34
65	1
66	1
67	1
68	4
69	1
70	1
71	1
72	17
73	1
74	1
75	16
76	4
77	1
78	1
79	1
80	10
81	43
82	1
83	1
84	4
85	1
86	1
87	1
88	2
89	1
90	7
91	1
92	4
93	1
94	1
95	1
96	2
97	1
98	29
99	7
100	74
101	1
102	1
103	1
104	2
105	1

n	a(n)
1	1
2	1
3	1
4	4
5	1
6	1
7	1
8	2
9	7
10	1
11	1
12	4
13	1
14	1
15	1
16	10
17	1
18	7
19	1
20	4
21	1
22	1
23	1
24	2
25	16
26	1
27	2
28	4
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	31
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	4
45	7
46	1
47	1
48	10
49	29
50	16
51	1
52	4
53	1
54	2
55	1
56	2
57	1
58	1
59	1
60	4
61	1
62	1
63	7
64	34
65	1
66	1
67	1
68	4
69	1
70	1
71	1
72	17
73	1
74	1
75	16
76	4
77	1
78	1
79	1
80	10
81	43
82	1
83	1
84	4
85	1
86	1
87	1
88	2
89	1
90	7
91	1
92	4
93	1
94	1
95	1
96	2
97	1
98	29
99	7
100	74
101	1
102	1
103	1
104	2
105	1