989339913

素因数分解:

$3^4\times {\mathrm{2129}}^1\times {\mathrm{5737}}^1$

素因数の和:7878

約数の個数: 20

約数和(自身を含む): 1478854740

約数和(自身を除く): 489514827

約数列:

[1, 3, 9, 27, 81, 2129, 5737, 6387, 17211, 19161, 51633, 57483, 154899, 172449, 464697, 12214073, 36642219, 109926657, 329779971, 989339913]

約数ペア:

[(1, 989339913), (3, 329779971), (9, 109926657), (27, 36642219), (81, 12214073), (2129, 464697), (5737, 172449), (6387, 154899), (17211, 57483), (19161, 51633)]