19934480

素因数分解:

$2^4\times 5^1\times {\mathrm{249181}}^1$

素因数の和:249194

約数の個数: 20

約数和(自身を含む): 46347852

約数和(自身を除く): 26413372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249181, 498362, 996724, 1245905, 1993448, 2491810, 3986896, 4983620, 9967240, 19934480]

約数ペア:

[(1, 19934480), (2, 9967240), (4, 4983620), (5, 3986896), (8, 2491810), (10, 1993448), (16, 1245905), (20, 996724), (40, 498362), (80, 249181)]