81765260

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{37507}}^1$

素因数の和:37625

約数の個数: 24

約数和(自身を含む): 173286960

約数和(自身を除く): 91521700

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 37507, 75014, 150028, 187535, 375070, 750140, 4088263, 8176526, 16353052, 20441315, 40882630, 81765260]

約数ペア:

[(1, 81765260), (2, 40882630), (4, 20441315), (5, 16353052), (10, 8176526), (20, 4088263), (109, 750140), (218, 375070), (436, 187535), (545, 150028), (1090, 75014), (2180, 37507)]