A247131 - cp's OEIS frontend

A247131 Numbers n > 0 such that a record number of composite numbers k have n as the sum of the nontrivial divisors of k.

n	a(n)
1	1
2	2
3	5
4	20
5	30
6	48
7	72
8	90
9	114
10	120
11	168
12	210
13	300
14	330
15	360
16	390
17	420
18	510
19	630
20	720
21	780
22	840
23	1050
24	1260
25	1470
26	1560
27	1680
28	1890
29	2100
30	2310
31	2520
32	2730
33	3150
34	3360
35	3570
36	3990
37	4200
38	4410
39	4620
40	5250
41	5460
42	6090
43	6510
44	6720
45	6930
46	7770
47	7980
48	8190
49	9030
50	9240
51	10710
52	10920
53	11550
54	13020
55	13650
56	13860
57	15540

[1, 2, 5, 20, 30, 48, 72, 90, 114, 120, 168, 210, 300, 330, 360, 390, 420, 510, 630, 720, 780, 840, 1050, 1260, 1470, 1560, 1680, 1890, 2100, 2310, 2520, 2730, 3150, 3360, 3570, 3990, 4200, 4410, 4620, 5250, 5460, 6090, 6510, 6720, 6930, 7770, 7980, 8190, 9030, 9240, 10710, 10920, 11550, 13020, 13650, 13860, 15540]

cp's OEIS Frontend

A247131 Numbers n > 0 such that a record number of composite numbers k have n as the sum of the nontrivial divisors of k.

Table of values

List of values