388638567

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{208609}}^1$

素因数の和:208644

約数の個数: 20

約数和(自身を含む): 605803440

約数和(自身を除く): 217164873

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 208609, 625827, 1877481, 4798007, 5632443, 14394021, 16897329, 43182063, 129546189, 388638567]

約数ペア:

[(1, 388638567), (3, 129546189), (9, 43182063), (23, 16897329), (27, 14394021), (69, 5632443), (81, 4798007), (207, 1877481), (621, 625827), (1863, 208609)]