217412080

素因数分解:

$2^4\times 5^1\times {\mathrm{2717651}}^1$

素因数の和:2717664

約数の個数: 20

約数和(自身を含む): 505483272

約数和(自身を除く): 288071192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2717651, 5435302, 10870604, 13588255, 21741208, 27176510, 43482416, 54353020, 108706040, 217412080]

約数ペア:

[(1, 217412080), (2, 108706040), (4, 54353020), (5, 43482416), (8, 27176510), (10, 21741208), (16, 13588255), (20, 10870604), (40, 5435302), (80, 2717651)]