19881069

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{709}}^1\times {\mathrm{719}}^1$

素因数の和:1444

約数の個数: 16

約数和(自身を含む): 28627200

約数和(自身を除く): 8746131

約数列:

[1, 3, 13, 39, 709, 719, 2127, 2157, 9217, 9347, 27651, 28041, 509771, 1529313, 6627023, 19881069]

約数ペア:

[(1, 19881069), (3, 6627023), (13, 1529313), (39, 509771), (709, 28041), (719, 27651), (2127, 9347), (2157, 9217)]