21919161

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{28879}}^1$

素因数の和:28916

約数の個数: 16

約数和(自身を含む): 33269760

約数和(自身を除く): 11350599

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 28879, 86637, 317669, 664217, 953007, 1992651, 7306387, 21919161]

約数ペア:

[(1, 21919161), (3, 7306387), (11, 1992651), (23, 953007), (33, 664217), (69, 317669), (253, 86637), (759, 28879)]