19808866

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{128629}}^1$

素因数の和:128649

約数の個数: 16

約数和(自身を含む): 37045440

約数和(自身を除く): 17236574

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 128629, 257258, 900403, 1414919, 1800806, 2829838, 9904433, 19808866]

約数ペア:

[(1, 19808866), (2, 9904433), (7, 2829838), (11, 1800806), (14, 1414919), (22, 900403), (77, 257258), (154, 128629)]