A336352 - cp's OEIS frontend

A336352 Number of prime divisors of sigma(n) that are larger than the largest prime factor of n; a(1) = 0.

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

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

cp's OEIS Frontend

A336352 Number of prime divisors of sigma(n) that are larger than the largest prime factor of n; a(1) = 0.

Table of values

List of values

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

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

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