8016040

素因数分解:

$2^3\times 5^1\times {\mathrm{200401}}^1$

素因数の和:200412

約数の個数: 16

約数和(自身を含む): 18036180

約数和(自身を除く): 10020140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 200401, 400802, 801604, 1002005, 1603208, 2004010, 4008020, 8016040]

約数ペア:

[(1, 8016040), (2, 4008020), (4, 2004010), (5, 1603208), (8, 1002005), (10, 801604), (20, 400802), (40, 200401)]