21389859

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{46601}}^1$

素因数の和:46627

約数の個数: 16

約数和(自身を含む): 33553440

約数和(自身を除く): 12163581

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 46601, 139803, 419409, 792217, 1258227, 2376651, 7129953, 21389859]

約数ペア:

[(1, 21389859), (3, 7129953), (9, 2376651), (17, 1258227), (27, 792217), (51, 419409), (153, 139803), (459, 46601)]