21879110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198901}}^1$

素因数の和:198919

約数の個数: 16

約数和(自身を含む): 42962832

約数和(自身を除く): 21083722

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198901, 397802, 994505, 1989010, 2187911, 4375822, 10939555, 21879110]

約数ペア:

[(1, 21879110), (2, 10939555), (5, 4375822), (10, 2187911), (11, 1989010), (22, 994505), (55, 397802), (110, 198901)]