18867411

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5417}}^1$

素因数の和:5472

約数の個数: 20

約数和(自身を含む): 28845432

約数和(自身を除く): 9978021

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5417, 16251, 48753, 146259, 232931, 438777, 698793, 2096379, 6289137, 18867411]

約数ペア:

[(1, 18867411), (3, 6289137), (9, 2096379), (27, 698793), (43, 438777), (81, 232931), (129, 146259), (387, 48753), (1161, 16251), (3483, 5417)]