19368920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11261}}^1$

素因数の和:11315

約数の個数: 32

約数和(自身を含む): 44597520

約数和(自身を除く): 25228600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11261, 22522, 45044, 56305, 90088, 112610, 225220, 450440, 484223, 968446, 1936892, 2421115, 3873784, 4842230, 9684460, 19368920]

約数ペア:

[(1, 19368920), (2, 9684460), (4, 4842230), (5, 3873784), (8, 2421115), (10, 1936892), (20, 968446), (40, 484223), (43, 450440), (86, 225220), (172, 112610), (215, 90088), (344, 56305), (430, 45044), (860, 22522), (1720, 11261)]