18725349640

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{716897}}^1$

素因数の和:717561

約数の個数: 32

約数和(自身を含む): 42196616280

約数和(自身を除く): 23471266640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 1306, 2612, 3265, 5224, 6530, 13060, 26120, 716897, 1433794, 2867588, 3584485, 5735176, 7168970, 14337940, 28675880, 468133741, 936267482, 1872534964, 2340668705, 3745069928, 4681337410, 9362674820, 18725349640]

約数ペア:

[(1, 18725349640), (2, 9362674820), (4, 4681337410), (5, 3745069928), (8, 2340668705), (10, 1872534964), (20, 936267482), (40, 468133741), (653, 28675880), (1306, 14337940), (2612, 7168970), (3265, 5735176), (5224, 3584485), (6530, 2867588), (13060, 1433794), (26120, 716897)]