20912411

素因数分解:

${\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:386

約数の個数: 16

約数和(自身を含む): 23143680

約数和(自身を除く): 2231269

約数列:

[1, 13, 71, 139, 163, 923, 1807, 2119, 9869, 11573, 22657, 128297, 150449, 294541, 1608647, 20912411]

約数ペア:

[(1, 20912411), (13, 1608647), (71, 294541), (139, 150449), (163, 128297), (923, 22657), (1807, 11573), (2119, 9869)]