18213640

素因数分解:

$2^3\times 5^1\times {\mathrm{455341}}^1$

素因数の和:455352

約数の個数: 16

約数和(自身を含む): 40980780

約数和(自身を除く): 22767140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 455341, 910682, 1821364, 2276705, 3642728, 4553410, 9106820, 18213640]

約数ペア:

[(1, 18213640), (2, 9106820), (4, 4553410), (5, 3642728), (8, 2276705), (10, 1821364), (20, 910682), (40, 455341)]