18790040

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4651}}^1$

素因数の和:4763

約数の個数: 32

約数和(自身を含む): 42705360

約数和(自身を除く): 23915320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4651, 9302, 18604, 23255, 37208, 46510, 93020, 186040, 469751, 939502, 1879004, 2348755, 3758008, 4697510, 9395020, 18790040]

約数ペア:

[(1, 18790040), (2, 9395020), (4, 4697510), (5, 3758008), (8, 2348755), (10, 1879004), (20, 939502), (40, 469751), (101, 186040), (202, 93020), (404, 46510), (505, 37208), (808, 23255), (1010, 18604), (2020, 9302), (4040, 4651)]