21005644

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{2399}}^1$

素因数の和:2613

約数の個数: 24

約数和(自身を含む): 40320000

約数和(自身を除く): 19314356

約数列:

[1, 2, 4, 11, 22, 44, 199, 398, 796, 2189, 2399, 4378, 4798, 8756, 9596, 26389, 52778, 105556, 477401, 954802, 1909604, 5251411, 10502822, 21005644]

約数ペア:

[(1, 21005644), (2, 10502822), (4, 5251411), (11, 1909604), (22, 954802), (44, 477401), (199, 105556), (398, 52778), (796, 26389), (2189, 9596), (2399, 8756), (4378, 4798)]