21820249989

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47538671}}^1$

素因数の和:47538697

約数の個数: 16

約数和(自身を含む): 34227843840

約数和(自身を除く): 12407593851

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47538671, 142616013, 427848039, 808157407, 1283544117, 2424472221, 7273416663, 21820249989]

約数ペア:

[(1, 21820249989), (3, 7273416663), (9, 2424472221), (17, 1283544117), (27, 808157407), (51, 427848039), (153, 142616013), (459, 47538671)]