数学中的40个完全数分别有哪些

数学中的40个完全数分别有哪些

目前一共找到47个完全数。（详见百度百科）
列举如下：
(2^2-1)*2^1
(2^3-1)*2^2
(2^5-1)*2^4
(2^7-1)*2^6
(2^13-1)*2^12
(2^17-1)*2^16
(2^19-1)*2^18
(2^31-1)*2^30
(2^61-1)*2^60
(2^89-1)*2^88
(2^107-1)*2^106
(2^127-1)*2^126
(2^521-1)*2^520
(2^607-1)*2^606
(2^1279-1)*2^1278
(2^2203-1)*2^2202
(2^2281-1)*2^2280
(2^3217-1)*2^3216
(2^4253-1)*2^4252
(2^4423-1)*2^4422
(2^9689-1)*2^9688
(2^9941-1)*2^9940
(2^11213-1)*2^11212
(2^19937-1)*2^19936
(2^21701-1)*2^21700
(2^23209-1)*2^23208
(2^44497-1)*2^44496
(2^86243-1)*2^86242
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^
(2^-1)*2^