8640999

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{997}}^1$

素因数の和:1116

約数の個数: 20

約数和(自身を含む): 13041864

約数和(自身を除く): 4400865

約数列:

[1, 3, 9, 27, 81, 107, 321, 963, 997, 2889, 2991, 8667, 8973, 26919, 80757, 106679, 320037, 960111, 2880333, 8640999]

約数ペア:

[(1, 8640999), (3, 2880333), (9, 960111), (27, 320037), (81, 106679), (107, 80757), (321, 26919), (963, 8973), (997, 8667), (2889, 2991)]