21189411

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18251}}^1$

素因数の和:18303

約数の個数: 16

約数和(自身を含む): 32123520

約数和(自身を除く): 10934109

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18251, 54753, 164259, 492777, 784793, 2354379, 7063137, 21189411]

約数ペア:

[(1, 21189411), (3, 7063137), (9, 2354379), (27, 784793), (43, 492777), (129, 164259), (387, 54753), (1161, 18251)]