20981744

素因数分解:

$2^4\times 7^1\times {\mathrm{187337}}^1$

素因数の和:187352

約数の個数: 20

約数和(自身を含む): 46459824

約数和(自身を除く): 25478080

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 187337, 374674, 749348, 1311359, 1498696, 2622718, 2997392, 5245436, 10490872, 20981744]

約数ペア:

[(1, 20981744), (2, 10490872), (4, 5245436), (7, 2997392), (8, 2622718), (14, 1498696), (16, 1311359), (28, 749348), (56, 374674), (112, 187337)]