19229780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8821}}^1$

素因数の和:8939

約数の個数: 24

約数和(自身を含む): 40757640

約数和(自身を除く): 21527860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8821, 17642, 35284, 44105, 88210, 176420, 961489, 1922978, 3845956, 4807445, 9614890, 19229780]

約数ペア:

[(1, 19229780), (2, 9614890), (4, 4807445), (5, 3845956), (10, 1922978), (20, 961489), (109, 176420), (218, 88210), (436, 44105), (545, 35284), (1090, 17642), (2180, 8821)]