A360330 - cp's OEIS frontend

A360330 a(n) is the number of divisors of n that have only prime factors that are not prime-indexed primes.

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

[1, 2, 1, 3, 1, 2, 2, 4, 1, 2, 1, 3, 2, 4, 1, 5, 1, 2, 2, 3, 2, 2, 2, 4, 1, 4, 1, 6, 2, 2, 1, 6, 1, 2, 2, 3, 2, 4, 2, 4, 1, 4, 2, 3, 1, 4, 2, 5, 3, 2, 1, 6, 2, 2, 1, 8, 2, 4, 1, 3, 2, 2, 2, 7, 2, 2, 1, 3, 2, 4, 2, 4, 2, 4, 1, 6, 2, 4, 2, 5, 1, 2, 1, 6, 1, 4, 2]

cp's OEIS Frontend

A360330 a(n) is the number of divisors of n that have only prime factors that are not prime-indexed primes.

Table of values

List of values

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

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

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