18728420

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{3011}}^1$

素因数の和:3331

約数の個数: 24

約数和(自身を含む): 39469248

約数和(自身を除く): 20740828

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3011, 3110, 6022, 6220, 12044, 15055, 30110, 60220, 936421, 1872842, 3745684, 4682105, 9364210, 18728420]

約数ペア:

[(1, 18728420), (2, 9364210), (4, 4682105), (5, 3745684), (10, 1872842), (20, 936421), (311, 60220), (622, 30110), (1244, 15055), (1555, 12044), (3011, 6220), (3110, 6022)]