A004490 - cp's OEIS frontend

A004490 Colossally abundant numbers: m for which there is a positive exponent epsilon such that sigma(m)/m^{1 + epsilon} >= sigma(k)/k^{1 + epsilon} for all k > 1, so that m attains the maximum value of sigma(m)/m^{1 + epsilon}.

n	a(n)
1	2
2	6
3	12
4	60
5	120
6	360
7	2520
8	5040
9	55440
10	720720
11	1441440
12	4324320
13	21621600
14	367567200
15	6983776800
16	160626866400
17	321253732800
18	9316358251200
19	288807105787200
20	2021649740510400
21	6064949221531200
22	224403121196654400

[2, 6, 12, 60, 120, 360, 2520, 5040, 55440, 720720, 1441440, 4324320, 21621600, 367567200, 6983776800, 160626866400, 321253732800, 9316358251200, 288807105787200, 2021649740510400, 6064949221531200, 224403121196654400]

cp's OEIS Frontend

A004490 Colossally abundant numbers: m for which there is a positive exponent epsilon such that sigma(m)/m^{1 + epsilon} >= sigma(k)/k^{1 + epsilon} for all k > 1, so that m attains the maximum value of sigma(m)/m^{1 + epsilon}.

Table of values

List of values