21707487

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47293}}^1$

素因数の和:47319

約数の個数: 16

約数和(自身を含む): 34051680

約数和(自身を除く): 12344193

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47293, 141879, 425637, 803981, 1276911, 2411943, 7235829, 21707487]

約数ペア:

[(1, 21707487), (3, 7235829), (9, 2411943), (17, 1276911), (27, 803981), (51, 425637), (153, 141879), (459, 47293)]