18215739

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4139}}^1$

素因数の和:4311

約数の個数: 16

約数和(自身を含む): 27158400

約数和(自身を除く): 8942661

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4139, 4401, 12417, 37251, 111753, 674657, 2023971, 6071913, 18215739]

約数ペア:

[(1, 18215739), (3, 6071913), (9, 2023971), (27, 674657), (163, 111753), (489, 37251), (1467, 12417), (4139, 4401)]