81431703

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{18503}}^1$

素因数の和:18675

約数の個数: 16

約数和(自身を含む): 121386240

約数和(自身を除く): 39954537

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 18503, 55509, 166527, 499581, 3015989, 9047967, 27143901, 81431703]

約数ペア:

[(1, 81431703), (3, 27143901), (9, 9047967), (27, 3015989), (163, 499581), (489, 166527), (1467, 55509), (4401, 18503)]