A336691 - cp's OEIS frontend

A336691 Number of distinct prime factors of 1+sigma(n).

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

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

cp's OEIS Frontend

A336691 Number of distinct prime factors of 1+sigma(n).

Table of values

List of values

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

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

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