80919999

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{81001}}^1$

素因数の和:81047

約数の個数: 16

約数和(自身を含む): 123123040

約数和(自身を除く): 42203041

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 81001, 243003, 729009, 2187027, 2997037, 8991111, 26973333, 80919999]

約数ペア:

[(1, 80919999), (3, 26973333), (9, 8991111), (27, 2997037), (37, 2187027), (111, 729009), (333, 243003), (999, 81001)]