18974306

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{769}}^1$

素因数の和:870

約数の個数: 24

約数和(自身を含む): 31282020

約数和(自身を除く): 12307714

約数列:

[1, 2, 13, 26, 73, 146, 169, 338, 769, 949, 1538, 1898, 9997, 12337, 19994, 24674, 56137, 112274, 129961, 259922, 729781, 1459562, 9487153, 18974306]

約数ペア:

[(1, 18974306), (2, 9487153), (13, 1459562), (26, 729781), (73, 259922), (146, 129961), (169, 112274), (338, 56137), (769, 24674), (949, 19994), (1538, 12337), (1898, 9997)]