21209103

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63691}}^1$

素因数の和:63734

約数の個数: 12

約数和(自身を含む): 31463848

約数和(自身を除く): 10254745

約数列:

[1, 3, 9, 37, 111, 333, 63691, 191073, 573219, 2356567, 7069701, 21209103]

約数ペア:

[(1, 21209103), (3, 7069701), (9, 2356567), (37, 573219), (111, 191073), (333, 63691)]