20440575

素因数分解:

$3^2\times 5^2\times {\mathrm{90847}}^1$

素因数の和:90863

約数の個数: 18

約数和(自身を含む): 36611744

約数和(自身を除く): 16171169

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 90847, 272541, 454235, 817623, 1362705, 2271175, 4088115, 6813525, 20440575]

約数ペア:

[(1, 20440575), (3, 6813525), (5, 4088115), (9, 2271175), (15, 1362705), (25, 817623), (45, 454235), (75, 272541), (225, 90847)]