20388355

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18451}}^1$

素因数の和:18486

約数の個数: 16

約数和(自身を含む): 27899424

約数和(自身を除く): 7511069

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18451, 92255, 239863, 313667, 1199315, 1568335, 4077671, 20388355]

約数ペア:

[(1, 20388355), (5, 4077671), (13, 1568335), (17, 1199315), (65, 313667), (85, 239863), (221, 92255), (1105, 18451)]