20218571997

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{3180521}}^1$

素因数の和:3180700

約数の個数: 16

約数和(自身を含む): 29209914048

約数和(自身を除く): 8991342051

約数列:

[1, 3, 13, 39, 163, 489, 2119, 6357, 3180521, 9541563, 41346773, 124040319, 518424923, 1555274769, 6739523999, 20218571997]

約数ペア:

[(1, 20218571997), (3, 6739523999), (13, 1555274769), (39, 518424923), (163, 124040319), (489, 41346773), (2119, 9541563), (6357, 3180521)]