18657657

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1303}}^1$

素因数の和:1389

約数の個数: 24

約数和(自身を含む): 28343744

約数和(自身を除く): 9686087

約数列:

[1, 3, 9, 37, 43, 111, 129, 333, 387, 1303, 1591, 3909, 4773, 11727, 14319, 48211, 56029, 144633, 168087, 433899, 504261, 2073073, 6219219, 18657657]

約数ペア:

[(1, 18657657), (3, 6219219), (9, 2073073), (37, 504261), (43, 433899), (111, 168087), (129, 144633), (333, 56029), (387, 48211), (1303, 14319), (1591, 11727), (3909, 4773)]