20917169

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{4691}}^1$

素因数の和:4725

約数の個数: 16

約数和(自身を含む): 26275200

約数和(自身を除く): 5358031

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 4691, 32837, 60983, 229859, 426881, 1609013, 2988167, 20917169]

約数ペア:

[(1, 20917169), (7, 2988167), (13, 1609013), (49, 426881), (91, 229859), (343, 60983), (637, 32837), (4459, 4691)]