A290126 - cp's OEIS frontend

A290126 Least k such that the sum of the n greatest divisors of k is a prime number.

n	a(n)
1	2
2	2
3	4
4	28
5	16
6	140
7	24
8	90
9	120
10	108
11	60
12	144
13	300
14	288
15	120
16	672
17	252
18	432
19	240
20	630
21	960
22	756
23	480
24	1200
25	1080
26	1728
27	1680
28	1008
29	720
30	2016
31	840
32	3150
33	2160
34	2700
35	1980
36	4800
37	2520
38	3780
39	3240
40	8736
41	3960
42	3600
43	6720
44	6930
45	10800
46	6300
47	4200
48	16848
49	9240
50	5040

[2, 2, 4, 28, 16, 140, 24, 90, 120, 108, 60, 144, 300, 288, 120, 672, 252, 432, 240, 630, 960, 756, 480, 1200, 1080, 1728, 1680, 1008, 720, 2016, 840, 3150, 2160, 2700, 1980, 4800, 2520, 3780, 3240, 8736, 3960, 3600, 6720, 6930, 10800, 6300, 4200, 16848, 9240, 5040]

cp's OEIS Frontend

A290126 Least k such that the sum of the n greatest divisors of k is a prime number.

Table of values

List of values