A074754 - cp's OEIS frontend

A074754 Number of integers k such that sigma(k) divides n.

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

[1, 1, 2, 2, 1, 3, 2, 3, 2, 1, 1, 6, 2, 3, 3, 3, 1, 5, 1, 3, 3, 1, 1, 10, 1, 2, 2, 5, 1, 5, 3, 5, 2, 1, 2, 9, 1, 2, 4, 5, 1, 8, 1, 3, 3, 1, 1, 13, 2, 1, 2, 3, 1, 7, 1, 8, 3, 1, 1, 12, 1, 4, 4, 5, 2, 3, 1, 3, 2, 3, 1, 18, 1, 2, 3, 3, 2, 6, 1, 7, 2, 1, 1, 15, 1, 1, 2, 4, 1, 10, 4, 2, 5, 1, 1, 19, 1, 5, 2, 3, 1]

cp's OEIS Frontend

A074754 Number of integers k such that sigma(k) divides n.

Table of values

List of values

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

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

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