17820220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81001}}^1$

素因数の和:81021

約数の個数: 24

約数和(自身を含む): 40825008

約数和(自身を除く): 23004788

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 81001, 162002, 324004, 405005, 810010, 891011, 1620020, 1782022, 3564044, 4455055, 8910110, 17820220]

約数ペア:

[(1, 17820220), (2, 8910110), (4, 4455055), (5, 3564044), (10, 1782022), (11, 1620020), (20, 891011), (22, 810010), (44, 405005), (55, 324004), (110, 162002), (220, 81001)]