18904496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90887}}^1$

素因数の和:90908

約数の個数: 20

約数和(自身を含む): 39445392

約数和(自身を除く): 20540896

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90887, 181774, 363548, 727096, 1181531, 1454192, 2363062, 4726124, 9452248, 18904496]

約数ペア:

[(1, 18904496), (2, 9452248), (4, 4726124), (8, 2363062), (13, 1454192), (16, 1181531), (26, 727096), (52, 363548), (104, 181774), (208, 90887)]