18720440

素因数分解:

$2^3\times 5^1\times {\mathrm{468011}}^1$

素因数の和:468022

約数の個数: 16

約数和(自身を含む): 42121080

約数和(自身を除く): 23400640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 468011, 936022, 1872044, 2340055, 3744088, 4680110, 9360220, 18720440]

約数ペア:

[(1, 18720440), (2, 9360220), (4, 4680110), (5, 3744088), (8, 2340055), (10, 1872044), (20, 936022), (40, 468011)]