1640480080

素因数分解:

$2^4\times 5^1\times {\mathrm{20506001}}^1$

素因数の和:20506014

約数の個数: 20

約数和(自身を含む): 3814116372

約数和(自身を除く): 2173636292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20506001, 41012002, 82024004, 102530005, 164048008, 205060010, 328096016, 410120020, 820240040, 1640480080]

約数ペア:

[(1, 1640480080), (2, 820240040), (4, 410120020), (5, 328096016), (8, 205060010), (10, 164048008), (16, 102530005), (20, 82024004), (40, 41012002), (80, 20506001)]