18906640

素因数分解:

$2^4\times 5^1\times {\mathrm{236333}}^1$

素因数の和:236346

約数の個数: 20

約数和(自身を含む): 43958124

約数和(自身を除く): 25051484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236333, 472666, 945332, 1181665, 1890664, 2363330, 3781328, 4726660, 9453320, 18906640]

約数ペア:

[(1, 18906640), (2, 9453320), (4, 4726660), (5, 3781328), (8, 2363330), (10, 1890664), (16, 1181665), (20, 945332), (40, 472666), (80, 236333)]