90387880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{205427}}^1$

素因数の和:205449

約数の個数: 32

約数和(自身を含む): 221862240

約数和(自身を除く): 131474360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 205427, 410854, 821708, 1027135, 1643416, 2054270, 2259697, 4108540, 4519394, 8217080, 9038788, 11298485, 18077576, 22596970, 45193940, 90387880]

約数ペア:

[(1, 90387880), (2, 45193940), (4, 22596970), (5, 18077576), (8, 11298485), (10, 9038788), (11, 8217080), (20, 4519394), (22, 4108540), (40, 2259697), (44, 2054270), (55, 1643416), (88, 1027135), (110, 821708), (220, 410854), (440, 205427)]