19491760

素因数分解:

$2^4\times 5^1\times {\mathrm{243647}}^1$

素因数の和:243660

約数の個数: 20

約数和(自身を含む): 45318528

約数和(自身を除く): 25826768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243647, 487294, 974588, 1218235, 1949176, 2436470, 3898352, 4872940, 9745880, 19491760]

約数ペア:

[(1, 19491760), (2, 9745880), (4, 4872940), (5, 3898352), (8, 2436470), (10, 1949176), (16, 1218235), (20, 974588), (40, 487294), (80, 243647)]