18857889

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{263}}^1$

素因数の和:557

約数の個数: 24

約数和(自身を含む): 28334592

約数和(自身を除く): 9476703

約数列:

[1, 3, 9, 31, 93, 257, 263, 279, 771, 789, 2313, 2367, 7967, 8153, 23901, 24459, 67591, 71703, 73377, 202773, 608319, 2095321, 6285963, 18857889]

約数ペア:

[(1, 18857889), (3, 6285963), (9, 2095321), (31, 608319), (93, 202773), (257, 73377), (263, 71703), (279, 67591), (771, 24459), (789, 23901), (2313, 8153), (2367, 7967)]