A317751 - cp's OEIS frontend

A317751 Number of divisors d of n such that there exists a factorization of n into factors > 1 with GCD d.

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	3
13	1
14	2
15	2
16	3
17	1
18	3
19	1
20	3
21	2
22	2
23	1
24	3
25	2
26	2
27	2
28	3
29	1
30	2
31	1
32	3
33	2
34	2
35	2
36	5
37	1
38	2
39	2
40	3
41	1
42	2
43	1
44	3
45	3
46	2
47	1
48	4
49	2
50	3
51	2
52	3
53	1
54	3
55	2
56	3
57	2
58	2
59	1
60	3
61	1
62	2
63	3
64	4
65	2
66	2
67	1
68	3
69	2
70	2
71	1
72	5
73	1
74	2
75	3
76	3
77	2
78	2
79	1
80	4
81	3
82	2
83	1
84	3
85	2
86	2
87	2
88	3
89	1
90	3
91	2
92	3
93	2
94	2
95	2
96	4
97	1
98	3
99	3
100	5
101	1
102	2
103	1
104	3
105	2

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

cp's OEIS Frontend

A317751 Number of divisors d of n such that there exists a factorization of n into factors > 1 with GCD d.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	3
13	1
14	2
15	2
16	3
17	1
18	3
19	1
20	3
21	2
22	2
23	1
24	3
25	2
26	2
27	2
28	3
29	1
30	2
31	1
32	3
33	2
34	2
35	2
36	5
37	1
38	2
39	2
40	3
41	1
42	2
43	1
44	3
45	3
46	2
47	1
48	4
49	2
50	3
51	2
52	3
53	1
54	3
55	2
56	3
57	2
58	2
59	1
60	3
61	1
62	2
63	3
64	4
65	2
66	2
67	1
68	3
69	2
70	2
71	1
72	5
73	1
74	2
75	3
76	3
77	2
78	2
79	1
80	4
81	3
82	2
83	1
84	3
85	2
86	2
87	2
88	3
89	1
90	3
91	2
92	3
93	2
94	2
95	2
96	4
97	1
98	3
99	3
100	5
101	1
102	2
103	1
104	3
105	2

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	3
13	1
14	2
15	2
16	3
17	1
18	3
19	1
20	3
21	2
22	2
23	1
24	3
25	2
26	2
27	2
28	3
29	1
30	2
31	1
32	3
33	2
34	2
35	2
36	5
37	1
38	2
39	2
40	3
41	1
42	2
43	1
44	3
45	3
46	2
47	1
48	4
49	2
50	3
51	2
52	3
53	1
54	3
55	2
56	3
57	2
58	2
59	1
60	3
61	1
62	2
63	3
64	4
65	2
66	2
67	1
68	3
69	2
70	2
71	1
72	5
73	1
74	2
75	3
76	3
77	2
78	2
79	1
80	4
81	3
82	2
83	1
84	3
85	2
86	2
87	2
88	3
89	1
90	3
91	2
92	3
93	2
94	2
95	2
96	4
97	1
98	3
99	3
100	5
101	1
102	2
103	1
104	3
105	2

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	3
13	1
14	2
15	2
16	3
17	1
18	3
19	1
20	3
21	2
22	2
23	1
24	3
25	2
26	2
27	2
28	3
29	1
30	2
31	1
32	3
33	2
34	2
35	2
36	5
37	1
38	2
39	2
40	3
41	1
42	2
43	1
44	3
45	3
46	2
47	1
48	4
49	2
50	3
51	2
52	3
53	1
54	3
55	2
56	3
57	2
58	2
59	1
60	3
61	1
62	2
63	3
64	4
65	2
66	2
67	1
68	3
69	2
70	2
71	1
72	5
73	1
74	2
75	3
76	3
77	2
78	2
79	1
80	4
81	3
82	2
83	1
84	3
85	2
86	2
87	2
88	3
89	1
90	3
91	2
92	3
93	2
94	2
95	2
96	4
97	1
98	3
99	3
100	5
101	1
102	2
103	1
104	3
105	2