完全数有那些呢？

完全数有那些呢？

已发现的完全数 1……6 2……28 3……496 4……8,128 5……33,550,336 6……8,589,869,056 7……137,438,691,328 8……2,305,843,008,139,952,128 9……2,658,455,991,569,831,744,654,692,615,953,842,176 10……191,561,942,608,236,107,294,793,378,084,303,638,130,997,321,548,169,216 11……13,164,036,458,569,648,337,239,753,460,458,722,910,223,472,318,386,943,117,783,728,128 12……14,474,011,154,664,524,427,946,373,126,085,988,481,573,677,491,474,835,889,066,354,349,131,199,152,128 ………… 47 ……2^42643800 X （2^42643801-1) 48 ……2^57885160 X (2^57885161-1) 由于后面数字位数较多，例子只列到12个，第13个有314位。到第39个完全数有25674127位数，据估计它以四号字打出时需要一本字典大小的书。 请采纳，谢谢。