19979968359

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{3142987}}^1$

素因数の和:3143166

約数の個数: 16

約数和(自身を含む): 28865201792

約数和(自身を除く): 8885233433

約数列:

[1, 3, 13, 39, 163, 489, 2119, 6357, 3142987, 9428961, 40858831, 122576493, 512306881, 1536920643, 6659989453, 19979968359]

約数ペア:

[(1, 19979968359), (3, 6659989453), (13, 1536920643), (39, 512306881), (163, 122576493), (489, 40858831), (2119, 9428961), (6357, 3142987)]