19919581

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{499}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 23040000

約数和(自身を除く): 3120419

約数列:

[1, 11, 19, 191, 209, 499, 2101, 3629, 5489, 9481, 39919, 95309, 104291, 1048399, 1810871, 19919581]

約数ペア:

[(1, 19919581), (11, 1810871), (19, 1048399), (191, 104291), (209, 95309), (499, 39919), (2101, 9481), (3629, 5489)]