18257643

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{13259}}^1$

素因数の和:13288

約数の個数: 20

約数和(自身を含む): 28880280

約数和(自身を除く): 10622637

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 13259, 39777, 119331, 225403, 357993, 676209, 1073979, 2028627, 6085881, 18257643]

約数ペア:

[(1, 18257643), (3, 6085881), (9, 2028627), (17, 1073979), (27, 676209), (51, 357993), (81, 225403), (153, 119331), (459, 39777), (1377, 13259)]