20605280240

素因数分解:

$2^4\times 5^1\times {\mathrm{257566003}}^1$

素因数の和:257566016

約数の個数: 20

約数和(自身を含む): 47907276744

約数和(自身を除く): 27301996504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257566003, 515132006, 1030264012, 1287830015, 2060528024, 2575660030, 4121056048, 5151320060, 10302640120, 20605280240]

約数ペア:

[(1, 20605280240), (2, 10302640120), (4, 5151320060), (5, 4121056048), (8, 2575660030), (10, 2060528024), (16, 1287830015), (20, 1030264012), (40, 515132006), (80, 257566003)]