721888730

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1\times {\mathrm{3739}}^1$

素因数の和:4238

約数の個数: 32

約数和(自身を含む): 1332936000

約数和(自身を除く): 611047270

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 449, 898, 2245, 3739, 4490, 7478, 18695, 19307, 37390, 38614, 96535, 160777, 193070, 321554, 803885, 1607770, 1678811, 3357622, 8394055, 16788110, 72188873, 144377746, 360944365, 721888730]

約数ペア:

[(1, 721888730), (2, 360944365), (5, 144377746), (10, 72188873), (43, 16788110), (86, 8394055), (215, 3357622), (430, 1678811), (449, 1607770), (898, 803885), (2245, 321554), (3739, 193070), (4490, 160777), (7478, 96535), (18695, 38614), (19307, 37390)]