85120040

素因数分解:

$2^3\times 5^1\times {\mathrm{2128001}}^1$

素因数の和:2128012

約数の個数: 16

約数和(自身を含む): 191520180

約数和(自身を除く): 106400140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2128001, 4256002, 8512004, 10640005, 17024008, 21280010, 42560020, 85120040]

約数ペア:

[(1, 85120040), (2, 42560020), (4, 21280010), (5, 17024008), (8, 10640005), (10, 8512004), (20, 4256002), (40, 2128001)]