A344590 - cp's OEIS frontend

A344590 Number of divisors d of n for which A011772(d) = A011772(n), where A011772(n) is the smallest number m such that m(m+1)/2 is divisible by n.

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

[1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 3, 1, 1, 1, 1, 1, 2, 1, 4, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 2, 2, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 2, 2, 1, 1, 4, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 3, 1, 1, 1, 1, 2]

cp's OEIS Frontend

A344590 Number of divisors d of n for which A011772(d) = A011772(n), where A011772(n) is the smallest number m such that m(m+1)/2 is divisible by n.

Table of values

List of values

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

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

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