19118187

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:565

約数の個数: 40

約数和(自身を含む): 31944000

約数和(自身を除く): 12825813

約数列:

[1, 3, 9, 11, 27, 33, 43, 81, 99, 129, 297, 387, 473, 499, 891, 1161, 1419, 1497, 3483, 4257, 4491, 5489, 12771, 13473, 16467, 21457, 38313, 40419, 49401, 64371, 148203, 193113, 236027, 444609, 579339, 708081, 1738017, 2124243, 6372729, 19118187]

約数ペア:

[(1, 19118187), (3, 6372729), (9, 2124243), (11, 1738017), (27, 708081), (33, 579339), (43, 444609), (81, 236027), (99, 193113), (129, 148203), (297, 64371), (387, 49401), (473, 40419), (499, 38313), (891, 21457), (1161, 16467), (1419, 13473), (1497, 12771), (3483, 5489), (4257, 4491)]