20112521

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 24595200

約数和(自身を除く): 4482679

約数列:

[1, 11, 13, 31, 143, 169, 341, 349, 403, 1859, 3839, 4433, 4537, 5239, 10819, 49907, 57629, 58981, 119009, 140647, 648791, 1547117, 1828411, 20112521]

約数ペア:

[(1, 20112521), (11, 1828411), (13, 1547117), (31, 648791), (143, 140647), (169, 119009), (341, 58981), (349, 57629), (403, 49907), (1859, 10819), (3839, 5239), (4433, 4537)]