A289776 - cp's OEIS frontend

A289776 Least k such that the sum of the first n divisors of k is a prime number.

n	a(n)
2	2
3	4
4	30
5	16
6	84
7	36
8	60
9	144
10	144
11	144
12	144
13	210
14	324
15	360
16	630
17	756
18	756
19	576
20	660
21	840
22	840
23	2040
24	900
25	900
26	2304
27	1980
28	1980
29	1980
30	4320
31	5184
32	3300
33	4620
34	5460
35	7056
36	3960
37	4680
38	2520
39	3600
40	3600
41	3600
42	10080
43	8100
44	3600
45	6300
46	9900
47	7920
48	11088
49	14400

[2, 4, 30, 16, 84, 36, 60, 144, 144, 144, 144, 210, 324, 360, 630, 756, 756, 576, 660, 840, 840, 2040, 900, 900, 2304, 1980, 1980, 1980, 4320, 5184, 3300, 4620, 5460, 7056, 3960, 4680, 2520, 3600, 3600, 3600, 10080, 8100, 3600, 6300, 9900, 7920, 11088, 14400]

cp's OEIS Frontend

A289776 Least k such that the sum of the first n divisors of k is a prime number.

Table of values

List of values