20161821303

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{172323259}}^1$

素因数の和:172323278

約数の個数: 12

約数和(自身を含む): 31362833320

約数和(自身を除く): 11201012017

約数列:

[1, 3, 9, 13, 39, 117, 172323259, 516969777, 1550909331, 2240202367, 6720607101, 20161821303]

約数ペア:

[(1, 20161821303), (3, 6720607101), (9, 2240202367), (13, 1550909331), (39, 516969777), (117, 172323259)]