[seqfan] Re: A question concerning perfect numbers

[Giovanni Resta]

On 10/24/2013 12:13 PM, Vladimir Shevelev wrote:

> My question is: are there non-perfect such numbers?
> Note, that there are respectively "many" numbers n, for which all their proper evil divisors sum to n (we submit sequence A230587).

Up to 10^9 the numbers I found are

28 = 2^2  * 7
496 = 2^4  * 31
8128 = 2^6  * 127
415800 = 2^3  * 3^3  * 5^2  * 7 * 11
2096128 = 2^10  * 23 * 89
33550336 = 2^12  * 8191

so, 415800 and 2096128.

Giovanni