21214587

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{727}}^1$

素因数の和:938

約数の個数: 16

約数和(自身を含む): 28933632

約数和(自身を除く): 7719045

約数列:

[1, 3, 71, 137, 213, 411, 727, 2181, 9727, 29181, 51617, 99599, 154851, 298797, 7071529, 21214587]

約数ペア:

[(1, 21214587), (3, 7071529), (71, 298797), (137, 154851), (213, 99599), (411, 51617), (727, 29181), (2181, 9727)]