18998991

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4463}}^1$

素因数の和:4523

約数の個数: 24

約数和(自身を含む): 30640896

約数和(自身を除く): 11641905

約数列:

[1, 3, 9, 11, 33, 43, 99, 129, 387, 473, 1419, 4257, 4463, 13389, 40167, 49093, 147279, 191909, 441837, 575727, 1727181, 2110999, 6332997, 18998991]

約数ペア:

[(1, 18998991), (3, 6332997), (9, 2110999), (11, 1727181), (33, 575727), (43, 441837), (99, 191909), (129, 147279), (387, 49093), (473, 40167), (1419, 13389), (4257, 4463)]