19905281168

素因数分解:

$2^4\times {\mathrm{1244080073}}^1$

素因数の和:1244080081

約数の個数: 10

約数和(自身を含む): 38566482294

約数和(自身を除く): 18661201126

約数列:

[1, 2, 4, 8, 16, 1244080073, 2488160146, 4976320292, 9952640584, 19905281168]

約数ペア:

[(1, 19905281168), (2, 9952640584), (4, 4976320292), (8, 2488160146), (16, 1244080073)]