28871991

素因数分解:

$3^3\times {\mathrm{739}}^1\times {\mathrm{1447}}^1$

素因数の和:2195

約数の個数: 16

約数和(自身を含む): 42860800

約数和(自身を除く): 13988809

約数列:

[1, 3, 9, 27, 739, 1447, 2217, 4341, 6651, 13023, 19953, 39069, 1069333, 3207999, 9623997, 28871991]

約数ペア:

[(1, 28871991), (3, 9623997), (9, 3207999), (27, 1069333), (739, 39069), (1447, 19953), (2217, 13023), (4341, 6651)]