28000040

素因数分解:

$2^3\times 5^1\times {\mathrm{700001}}^1$

素因数の和:700012

約数の個数: 16

約数和(自身を含む): 63000180

約数和(自身を除く): 35000140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 700001, 1400002, 2800004, 3500005, 5600008, 7000010, 14000020, 28000040]

約数ペア:

[(1, 28000040), (2, 14000020), (4, 7000010), (5, 5600008), (8, 3500005), (10, 2800004), (20, 1400002), (40, 700001)]