28231659

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{4909}}^1$

素因数の和:4992

約数の個数: 20

約数和(自身を含む): 42775920

約数和(自身を除く): 14544261

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 4909, 5751, 14727, 44181, 132543, 348539, 397629, 1045617, 3136851, 9410553, 28231659]

約数ペア:

[(1, 28231659), (3, 9410553), (9, 3136851), (27, 1045617), (71, 397629), (81, 348539), (213, 132543), (639, 44181), (1917, 14727), (4909, 5751)]