21084561

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63317}}^1$

素因数の和:63360

約数の個数: 12

約数和(自身を含む): 31279092

約数和(自身を除く): 10194531

約数列:

[1, 3, 9, 37, 111, 333, 63317, 189951, 569853, 2342729, 7028187, 21084561]

約数ペア:

[(1, 21084561), (3, 7028187), (9, 2342729), (37, 569853), (111, 189951), (333, 63317)]