20918084

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{2389}}^1$

素因数の和:2603

約数の個数: 24

約数和(自身を含む): 40152000

約数和(自身を除く): 19233916

約数列:

[1, 2, 4, 11, 22, 44, 199, 398, 796, 2189, 2389, 4378, 4778, 8756, 9556, 26279, 52558, 105116, 475411, 950822, 1901644, 5229521, 10459042, 20918084]

約数ペア:

[(1, 20918084), (2, 10459042), (4, 5229521), (11, 1901644), (22, 950822), (44, 475411), (199, 105116), (398, 52558), (796, 26279), (2189, 9556), (2389, 8756), (4378, 4778)]