18972910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{997}}^1$

素因数の和:1188

約数の個数: 32

約数和(自身を含む): 37508832

約数和(自身を除く): 18535922

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 173, 346, 865, 997, 1730, 1903, 1994, 3806, 4985, 9515, 9970, 10967, 19030, 21934, 54835, 109670, 172481, 344962, 862405, 1724810, 1897291, 3794582, 9486455, 18972910]

約数ペア:

[(1, 18972910), (2, 9486455), (5, 3794582), (10, 1897291), (11, 1724810), (22, 862405), (55, 344962), (110, 172481), (173, 109670), (346, 54835), (865, 21934), (997, 19030), (1730, 10967), (1903, 9970), (1994, 9515), (3806, 4985)]