18840580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85639}}^1$

素因数の和:85659

約数の個数: 24

約数和(自身を含む): 43162560

約数和(自身を除く): 24321980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85639, 171278, 342556, 428195, 856390, 942029, 1712780, 1884058, 3768116, 4710145, 9420290, 18840580]

約数ペア:

[(1, 18840580), (2, 9420290), (4, 4710145), (5, 3768116), (10, 1884058), (11, 1712780), (20, 942029), (22, 856390), (44, 428195), (55, 342556), (110, 171278), (220, 85639)]