21908315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2357}}^1$

素因数の和:2399

約数の個数: 24

約数和(自身を含む): 31069008

約数和(自身を除く): 9160693

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 715, 845, 1859, 2357, 9295, 11785, 25927, 30641, 129635, 153205, 337051, 398333, 1685255, 1991665, 4381663, 21908315]

約数ペア:

[(1, 21908315), (5, 4381663), (11, 1991665), (13, 1685255), (55, 398333), (65, 337051), (143, 153205), (169, 129635), (715, 30641), (845, 25927), (1859, 11785), (2357, 9295)]