81996878

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1\times {\mathrm{2381}}^1$

素因数の和:2707

約数の個数: 16

約数和(自身を含む): 125369424

約数和(自身を除く): 43372546

約数列:

[1, 2, 67, 134, 257, 514, 2381, 4762, 17219, 34438, 159527, 319054, 611917, 1223834, 40998439, 81996878]

約数ペア:

[(1, 81996878), (2, 40998439), (67, 1223834), (134, 611917), (257, 319054), (514, 159527), (2381, 34438), (4762, 17219)]