247293

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:126

約数の個数: 20

約数和(自身を含む): 383328

約数和(自身を除く): 136035

約数列:

[1, 3, 9, 27, 43, 71, 81, 129, 213, 387, 639, 1161, 1917, 3053, 3483, 5751, 9159, 27477, 82431, 247293]

約数ペア:

[(1, 247293), (3, 82431), (9, 27477), (27, 9159), (43, 5751), (71, 3483), (81, 3053), (129, 1917), (213, 1161), (387, 639)]