A337331 - cp's OEIS frontend

A337331 Number of pairs of divisors of n, (d1,d2), with d1 <= d2, whose average is an integer and divides n.

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

[1, 2, 2, 3, 2, 5, 2, 4, 3, 4, 2, 9, 2, 4, 5, 5, 2, 8, 2, 6, 4, 4, 2, 13, 3, 4, 4, 7, 2, 12, 2, 6, 4, 4, 4, 15, 2, 4, 4, 9, 2, 10, 2, 6, 9, 4, 2, 17, 3, 6, 4, 6, 2, 11, 4, 10, 4, 4, 2, 23, 2, 4, 6, 7, 4, 11, 2, 6, 4, 8, 2, 22, 2, 4, 8, 6, 4, 10, 2, 12, 5, 4, 2, 21, 4, 4, 4, 8, 2, 22, 5, 6, 4, 4, 4, 21, 2, 6, 6, 9]

cp's OEIS Frontend

A337331 Number of pairs of divisors of n, (d1,d2), with d1 <= d2, whose average is an integer and divides n.

Table of values

List of values

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

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

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