19728680

素因数分解:

$2^3\times 5^1\times {\mathrm{493217}}^1$

素因数の和:493228

約数の個数: 16

約数和(自身を含む): 44389620

約数和(自身を除く): 24660940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 493217, 986434, 1972868, 2466085, 3945736, 4932170, 9864340, 19728680]

約数ペア:

[(1, 19728680), (2, 9864340), (4, 4932170), (5, 3945736), (8, 2466085), (10, 1972868), (20, 986434), (40, 493217)]