8991999

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{9001}}^1$

素因数の和:9047

約数の個数: 16

約数和(自身を含む): 13683040

約数和(自身を除く): 4691041

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 9001, 27003, 81009, 243027, 333037, 999111, 2997333, 8991999]

約数ペア:

[(1, 8991999), (3, 2997333), (9, 999111), (27, 333037), (37, 243027), (111, 81009), (333, 27003), (999, 9001)]