890919

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{647}}^1$

素因数の和:676

約数の個数: 20

約数和(自身を含む): 1411344

約数和(自身を除く): 520425

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 647, 1377, 1941, 5823, 10999, 17469, 32997, 52407, 98991, 296973, 890919]

約数ペア:

[(1, 890919), (3, 296973), (9, 98991), (17, 52407), (27, 32997), (51, 17469), (81, 10999), (153, 5823), (459, 1941), (647, 1377)]