A330757 - cp's OEIS frontend

A330757 Let d(1) < d(2) < ... < d(q) denote the divisors of n; a(n) is the number of elements of the set { d(1)/d(2), d(2)/d(3), ..., d(q-1)/d(q) }.

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	2
16	1
17	1
18	2
19	1
20	2
21	2
22	2
23	1
24	3
25	1
26	2
27	1
28	2
29	1
30	4
31	1
32	1
33	2
34	2
35	2
36	3
37	1
38	2
39	2
40	3
41	1
42	3
43	1
44	2
45	3
46	2
47	1
48	3
49	1
50	2
51	2
52	2
53	1
54	2
55	2
56	3
57	2
58	2
59	1
60	6
61	1
62	2
63	3
64	1
65	2
66	3
67	1
68	2
69	2
70	4
71	1
72	4
73	1
74	2
75	2
76	2
77	2
78	3
79	1
80	3
81	1
82	2
83	1
84	5
85	2
86	2
87	2

[0, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 2, 1, 1, 2, 1, 2, 2, 2, 1, 3, 1, 2, 1, 2, 1, 4, 1, 1, 2, 2, 2, 3, 1, 2, 2, 3, 1, 3, 1, 2, 3, 2, 1, 3, 1, 2, 2, 2, 1, 2, 2, 3, 2, 2, 1, 6, 1, 2, 3, 1, 2, 3, 1, 2, 2, 4, 1, 4, 1, 2, 2, 2, 2, 3, 1, 3, 1, 2, 1, 5, 2, 2, 2]

cp's OEIS Frontend

A330757 Let d(1) < d(2) < ... < d(q) denote the divisors of n; a(n) is the number of elements of the set { d(1)/d(2), d(2)/d(3), ..., d(q-1)/d(q) }.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	2
16	1
17	1
18	2
19	1
20	2
21	2
22	2
23	1
24	3
25	1
26	2
27	1
28	2
29	1
30	4
31	1
32	1
33	2
34	2
35	2
36	3
37	1
38	2
39	2
40	3
41	1
42	3
43	1
44	2
45	3
46	2
47	1
48	3
49	1
50	2
51	2
52	2
53	1
54	2
55	2
56	3
57	2
58	2
59	1
60	6
61	1
62	2
63	3
64	1
65	2
66	3
67	1
68	2
69	2
70	4
71	1
72	4
73	1
74	2
75	2
76	2
77	2
78	3
79	1
80	3
81	1
82	2
83	1
84	5
85	2
86	2
87	2

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	2
16	1
17	1
18	2
19	1
20	2
21	2
22	2
23	1
24	3
25	1
26	2
27	1
28	2
29	1
30	4
31	1
32	1
33	2
34	2
35	2
36	3
37	1
38	2
39	2
40	3
41	1
42	3
43	1
44	2
45	3
46	2
47	1
48	3
49	1
50	2
51	2
52	2
53	1
54	2
55	2
56	3
57	2
58	2
59	1
60	6
61	1
62	2
63	3
64	1
65	2
66	3
67	1
68	2
69	2
70	4
71	1
72	4
73	1
74	2
75	2
76	2
77	2
78	3
79	1
80	3
81	1
82	2
83	1
84	5
85	2
86	2
87	2

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	2
16	1
17	1
18	2
19	1
20	2
21	2
22	2
23	1
24	3
25	1
26	2
27	1
28	2
29	1
30	4
31	1
32	1
33	2
34	2
35	2
36	3
37	1
38	2
39	2
40	3
41	1
42	3
43	1
44	2
45	3
46	2
47	1
48	3
49	1
50	2
51	2
52	2
53	1
54	2
55	2
56	3
57	2
58	2
59	1
60	6
61	1
62	2
63	3
64	1
65	2
66	3
67	1
68	2
69	2
70	4
71	1
72	4
73	1
74	2
75	2
76	2
77	2
78	3
79	1
80	3
81	1
82	2
83	1
84	5
85	2
86	2
87	2