A304817 - cp's OEIS frontend

A304817 Number of divisors of n that are either 1 or not a perfect power.

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

[1, 2, 2, 2, 2, 4, 2, 2, 2, 4, 2, 5, 2, 4, 4, 2, 2, 5, 2, 5, 4, 4, 2, 6, 2, 4, 2, 5, 2, 8, 2, 2, 4, 4, 4, 6, 2, 4, 4, 6, 2, 8, 2, 5, 5, 4, 2, 7, 2, 5, 4, 5, 2, 6, 4, 6, 4, 4, 2, 11, 2, 4, 5, 2, 4, 8, 2, 5, 4, 8, 2, 8, 2, 4, 5, 5, 4, 8, 2, 7, 2, 4, 2, 11, 4, 4]

cp's OEIS Frontend

A304817 Number of divisors of n that are either 1 or not a perfect power.

Table of values

List of values

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

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

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