2018347640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{499591}}^1$

素因数の和:499703

約数の個数: 32

約数和(自身を含む): 4586254560

約数和(自身を除く): 2567906920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 499591, 999182, 1998364, 2497955, 3996728, 4995910, 9991820, 19983640, 50458691, 100917382, 201834764, 252293455, 403669528, 504586910, 1009173820, 2018347640]

約数ペア:

[(1, 2018347640), (2, 1009173820), (4, 504586910), (5, 403669528), (8, 252293455), (10, 201834764), (20, 100917382), (40, 50458691), (101, 19983640), (202, 9991820), (404, 4995910), (505, 3996728), (808, 2497955), (1010, 1998364), (2020, 999182), (4040, 499591)]