A141198 - cp's OEIS frontend

A141198 a(n) is the number of divisors of n that are each one more than a power of a prime.

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

[0, 1, 1, 2, 1, 3, 0, 3, 2, 3, 0, 5, 0, 2, 2, 3, 1, 5, 0, 5, 1, 1, 0, 7, 1, 2, 2, 4, 0, 6, 0, 4, 2, 2, 1, 7, 0, 2, 1, 6, 0, 5, 0, 3, 3, 1, 0, 8, 0, 4, 2, 3, 0, 6, 1, 5, 1, 1, 0, 10, 0, 2, 2, 4, 2, 4, 0, 4, 1, 4, 0, 10, 0, 2, 2, 3, 0, 4, 0, 7, 2, 2, 0, 9, 2, 1, 1, 4, 0, 9, 0, 2, 1, 1, 1, 9, 0, 3, 3, 6, 0, 5, 0]

cp's OEIS Frontend

A141198 a(n) is the number of divisors of n that are each one more than a power of a prime.

Table of values

List of values

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

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

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