18298220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21277}}^1$

素因数の和:21329

約数の個数: 24

約数和(自身を含む): 39321744

約数和(自身を除く): 21023524

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21277, 42554, 85108, 106385, 212770, 425540, 914911, 1829822, 3659644, 4574555, 9149110, 18298220]

約数ペア:

[(1, 18298220), (2, 9149110), (4, 4574555), (5, 3659644), (10, 1829822), (20, 914911), (43, 425540), (86, 212770), (172, 106385), (215, 85108), (430, 42554), (860, 21277)]