21000901329

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{137260793}}^1$

素因数の和:137260816

約数の個数: 12

約数和(自身を含む): 32119025796

約数和(自身を除く): 11118124467

約数列:

[1, 3, 9, 17, 51, 153, 137260793, 411782379, 1235347137, 2333433481, 7000300443, 21000901329]

約数ペア:

[(1, 21000901329), (3, 7000300443), (9, 2333433481), (17, 1235347137), (51, 411782379), (153, 137260793)]