9998991

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{10009}}^1$

素因数の和:10055

約数の個数: 16

約数和(自身を含む): 15215200

約数和(自身を除く): 5216209

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 10009, 30027, 90081, 270243, 370333, 1110999, 3332997, 9998991]

約数ペア:

[(1, 9998991), (3, 3332997), (9, 1110999), (27, 370333), (37, 270243), (111, 90081), (333, 30027), (999, 10009)]