A193335 - cp's OEIS frontend

A193335 Number of odd divisors of sigma(n).

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

[1, 2, 1, 2, 2, 2, 1, 4, 2, 3, 2, 2, 2, 2, 2, 2, 3, 4, 2, 4, 1, 3, 2, 4, 2, 4, 2, 2, 4, 3, 1, 6, 2, 4, 2, 4, 2, 4, 2, 6, 4, 2, 2, 4, 4, 3, 2, 2, 4, 4, 3, 3, 4, 4, 3, 4, 2, 6, 4, 4, 2, 2, 2, 2, 4, 3, 2, 6, 2, 3, 3, 8, 2, 4, 2, 4, 2, 4, 2, 4]

cp's OEIS Frontend

A193335 Number of odd divisors of sigma(n).

Table of values

List of values

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

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

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