A101606 - cp's OEIS frontend

A101606 a(n) = number of divisors of n that have exactly three (not necessarily distinct) prime factors.

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

[0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 2, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 2, 0, 0, 0, 2, 0, 1, 0, 1, 1, 0, 0, 2, 0, 1, 0, 1, 0, 2, 0, 2, 0, 0, 0, 3, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 3, 0, 0, 1, 1, 0, 1, 0, 2, 1, 0, 0, 3, 0, 0, 0, 2, 0, 3, 0, 1, 0, 0, 0, 2, 0, 1, 1, 2, 0, 1, 0, 2, 1]

cp's OEIS Frontend

A101606 a(n) = number of divisors of n that have exactly three (not necessarily distinct) prime factors.

Table of values

List of values

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

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

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