19905317

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{353}}^1$

素因数の和:508

約数の個数: 16

約数和(自身を含む): 22021632

約数和(自身を除く): 2116315

約数列:

[1, 17, 31, 107, 353, 527, 1819, 3317, 6001, 10943, 37771, 56389, 186031, 642107, 1170901, 19905317]

約数ペア:

[(1, 19905317), (17, 1170901), (31, 642107), (107, 186031), (353, 56389), (527, 37771), (1819, 10943), (3317, 6001)]