217352005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107867}}^1$

素因数の和:107916

約数の個数: 16

約数和(自身を含む): 289949184

約数和(自身を除く): 72597179

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 107867, 539335, 1402271, 3343877, 7011355, 16719385, 43470401, 217352005]

約数ペア:

[(1, 217352005), (5, 43470401), (13, 16719385), (31, 7011355), (65, 3343877), (155, 1402271), (403, 539335), (2015, 107867)]