21480745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2311}}^1$

素因数の和:2353

約数の個数: 24

約数和(自身を含む): 30462912

約数和(自身を除く): 8982167

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 715, 845, 1859, 2311, 9295, 11555, 25421, 30043, 127105, 150215, 330473, 390559, 1652365, 1952795, 4296149, 21480745]

約数ペア:

[(1, 21480745), (5, 4296149), (11, 1952795), (13, 1652365), (55, 390559), (65, 330473), (143, 150215), (169, 127105), (715, 30043), (845, 25421), (1859, 11555), (2311, 9295)]