7989651640

素因数分解:

$2^3\times 5^1\times {\mathrm{809}}^1\times {\mathrm{246899}}^1$

素因数の和:247719

約数の個数: 32

約数和(自身を含む): 17999010000

約数和(自身を除く): 10009358360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 809, 1618, 3236, 4045, 6472, 8090, 16180, 32360, 246899, 493798, 987596, 1234495, 1975192, 2468990, 4937980, 9875960, 199741291, 399482582, 798965164, 998706455, 1597930328, 1997412910, 3994825820, 7989651640]

約数ペア:

[(1, 7989651640), (2, 3994825820), (4, 1997412910), (5, 1597930328), (8, 998706455), (10, 798965164), (20, 399482582), (40, 199741291), (809, 9875960), (1618, 4937980), (3236, 2468990), (4045, 1975192), (6472, 1234495), (8090, 987596), (16180, 493798), (32360, 246899)]