18909969

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{15641}}^1$

素因数の和:15688

約数の個数: 16

約数和(自身を含む): 28030464

約数和(自身を除く): 9120495

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 15641, 46923, 203333, 484871, 609999, 1454613, 6303323, 18909969]

約数ペア:

[(1, 18909969), (3, 6303323), (13, 1454613), (31, 609999), (39, 484871), (93, 203333), (403, 46923), (1209, 15641)]