A365207 - cp's OEIS frontend

A365207 The number of divisors d of n such that gcd(d, n/d) is a power of 2 (A000079).

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

[1, 2, 2, 3, 2, 4, 2, 4, 2, 4, 2, 6, 2, 4, 4, 5, 2, 4, 2, 6, 4, 4, 2, 8, 2, 4, 2, 6, 2, 8, 2, 6, 4, 4, 4, 6, 2, 4, 4, 8, 2, 8, 2, 6, 4, 4, 2, 10, 2, 4, 4, 6, 2, 4, 4, 8, 4, 4, 2, 12, 2, 4, 4, 7, 4, 8, 2, 6, 4, 8, 2, 8, 2, 4, 4, 6, 4, 8, 2, 10, 2, 4, 2, 12, 4, 4]

cp's OEIS Frontend

A365207 The number of divisors d of n such that gcd(d, n/d) is a power of 2 (A000079).

Table of values

List of values

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

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

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