A063440 - cp's OEIS frontend

A063440 Number of divisors of n-th triangular number.

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

[1, 2, 4, 4, 4, 4, 6, 9, 6, 4, 8, 8, 4, 8, 16, 8, 6, 6, 8, 16, 8, 4, 12, 18, 6, 8, 16, 8, 8, 8, 10, 20, 8, 8, 24, 12, 4, 8, 24, 12, 8, 8, 8, 24, 12, 4, 16, 24, 9, 12, 16, 8, 8, 16, 24, 24, 8, 4, 16, 16, 4, 12, 36, 24, 16, 8, 8, 16, 16, 8, 18, 18, 4, 12, 24, 16, 16, 8, 16, 40, 10, 4, 16]

cp's OEIS Frontend

A063440 Number of divisors of n-th triangular number.

Table of values

List of values

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

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

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