13205781

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{13219}}^1$

素因数の和:13265

約数の個数: 16

約数和(自身を含む): 20094400

約数和(自身を除く): 6888619

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 13219, 39657, 118971, 356913, 489103, 1467309, 4401927, 13205781]

約数ペア:

[(1, 13205781), (3, 4401927), (9, 1467309), (27, 489103), (37, 356913), (111, 118971), (333, 39657), (999, 13219)]