A360326 - cp's OEIS frontend

A360326 a(n) is the number of divisors of n that have only prime-indexed prime factors.

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

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

cp's OEIS Frontend

A360326 a(n) is the number of divisors of n that have only prime-indexed prime factors.

Table of values

List of values

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

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

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