4020040

素因数分解:

$2^3\times 5^1\times {\mathrm{100501}}^1$

素因数の和:100512

約数の個数: 16

約数和(自身を含む): 9045180

約数和(自身を除く): 5025140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 100501, 201002, 402004, 502505, 804008, 1005010, 2010020, 4020040]

約数ペア:

[(1, 4020040), (2, 2010020), (4, 1005010), (5, 804008), (8, 502505), (10, 402004), (20, 201002), (40, 100501)]