2189980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8423}}^1$

素因数の和:8445

約数の個数: 24

約数和(自身を含む): 4953312

約数和(自身を除く): 2763332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 8423, 16846, 33692, 42115, 84230, 109499, 168460, 218998, 437996, 547495, 1094990, 2189980]

約数ペア:

[(1, 2189980), (2, 1094990), (4, 547495), (5, 437996), (10, 218998), (13, 168460), (20, 109499), (26, 84230), (52, 42115), (65, 33692), (130, 16846), (260, 8423)]