A368544 - cp's OEIS frontend

A368544 The number of divisors of n whose prime factors are all of the form k^2+1.

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

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

cp's OEIS Frontend

A368544 The number of divisors of n whose prime factors are all of the form k^2+1.

Table of values

List of values

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

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

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