81906875

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{4519}}^1$

素因数の和:4568

約数の個数: 20

約数和(自身を含む): 105903600

約数和(自身を除く): 23996725

約数列:

[1, 5, 25, 29, 125, 145, 625, 725, 3625, 4519, 18125, 22595, 112975, 131051, 564875, 655255, 2824375, 3276275, 16381375, 81906875]

約数ペア:

[(1, 81906875), (5, 16381375), (25, 3276275), (29, 2824375), (125, 655255), (145, 564875), (625, 131051), (725, 112975), (3625, 22595), (4519, 18125)]