21000398529

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{636375713}}^1$

素因数の和:636375727

約数の個数: 8

約数和(自身を含む): 30546034272

約数和(自身を除く): 9545635743

約数列:

[1, 3, 11, 33, 636375713, 1909127139, 7000132843, 21000398529]

約数ペア:

[(1, 21000398529), (3, 7000132843), (11, 1909127139), (33, 636375713)]