40840040

素因数分解:

$2^3\times 5^1\times {\mathrm{1021001}}^1$

素因数の和:1021012

約数の個数: 16

約数和(自身を含む): 91890180

約数和(自身を除く): 51050140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1021001, 2042002, 4084004, 5105005, 8168008, 10210010, 20420020, 40840040]

約数ペア:

[(1, 40840040), (2, 20420020), (4, 10210010), (5, 8168008), (8, 5105005), (10, 4084004), (20, 2042002), (40, 1021001)]