1998340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2437}}^1$

素因数の和:2487

約数の個数: 24

約数和(自身を含む): 4300632

約数和(自身を除く): 2302292

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2437, 4874, 9748, 12185, 24370, 48740, 99917, 199834, 399668, 499585, 999170, 1998340]

約数ペア:

[(1, 1998340), (2, 999170), (4, 499585), (5, 399668), (10, 199834), (20, 99917), (41, 48740), (82, 24370), (164, 12185), (205, 9748), (410, 4874), (820, 2437)]