A242310 - cp's OEIS frontend

A242310 Largest 1 < k <= A000005(n) such that the sum of k distinct divisors of n is equal to k*m for some m, or 1 if no such k exists.

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

[1, 1, 2, 2, 2, 4, 2, 2, 2, 2, 2, 5, 2, 2, 4, 3, 2, 5, 2, 6, 4, 4, 2, 7, 2, 2, 4, 5, 2, 8, 2, 4, 4, 3, 4, 8, 2, 4, 4, 7, 2, 8, 2, 6, 6, 4, 2, 11, 3, 4, 4, 5, 2, 8, 4, 8, 4, 2, 2, 12, 2, 4, 5, 6, 4, 8, 2, 6, 4, 8, 2, 11, 2, 2, 4, 4, 2, 8, 4, 2, 2, 11, 4, 4, 4]

cp's OEIS Frontend

A242310 Largest 1 < k <= A000005(n) such that the sum of k distinct divisors of n is equal to k*m for some m, or 1 if no such k exists.

Table of values

List of values

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

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

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