19660431

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{25303}}^1$

素因数の和:25350

約数の個数: 16

約数和(自身を含む): 30769664

約数和(自身を除く): 11109233

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 25303, 75909, 177121, 531363, 936211, 2808633, 6553477, 19660431]

約数ペア:

[(1, 19660431), (3, 6553477), (7, 2808633), (21, 936211), (37, 531363), (111, 177121), (259, 75909), (777, 25303)]