20405398

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{827}}^1$

素因数の和:928

約数の個数: 24

約数和(自身を含む): 33638328

約数和(自身を除く): 13232930

約数列:

[1, 2, 13, 26, 73, 146, 169, 338, 827, 949, 1654, 1898, 10751, 12337, 21502, 24674, 60371, 120742, 139763, 279526, 784823, 1569646, 10202699, 20405398]

約数ペア:

[(1, 20405398), (2, 10202699), (13, 1569646), (26, 784823), (73, 279526), (146, 139763), (169, 120742), (338, 60371), (827, 24674), (949, 21502), (1654, 12337), (1898, 10751)]