19997655

素因数分解:

$3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8179}}^1$

素因数の和:8350

約数の個数: 16

約数和(自身を含む): 32196480

約数和(自身を除く): 12198825

約数列:

[1, 3, 5, 15, 163, 489, 815, 2445, 8179, 24537, 40895, 122685, 1333177, 3999531, 6665885, 19997655]

約数ペア:

[(1, 19997655), (3, 6665885), (5, 3999531), (15, 1333177), (163, 122685), (489, 40895), (815, 24537), (2445, 8179)]