18474993

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{15913}}^1$

素因数の和:15965

約数の個数: 16

約数和(自身を含む): 28008640

約数和(自身を除く): 9533647

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 15913, 47739, 143217, 429651, 684259, 2052777, 6158331, 18474993]

約数ペア:

[(1, 18474993), (3, 6158331), (9, 2052777), (27, 684259), (43, 429651), (129, 143217), (387, 47739), (1161, 15913)]