218540855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{108457}}^1$

素因数の和:108506

約数の個数: 16

約数和(自身を含む): 291535104

約数和(自身を除く): 72994249

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 108457, 542285, 1409941, 3362167, 7049705, 16810835, 43708171, 218540855]

約数ペア:

[(1, 218540855), (5, 43708171), (13, 16810835), (31, 7049705), (65, 3362167), (155, 1409941), (403, 542285), (2015, 108457)]