21238389

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{46271}}^1$

素因数の和:46297

約数の個数: 16

約数和(自身を含む): 33315840

約数和(自身を除く): 12077451

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 46271, 138813, 416439, 786607, 1249317, 2359821, 7079463, 21238389]

約数ペア:

[(1, 21238389), (3, 7079463), (9, 2359821), (17, 1249317), (27, 786607), (51, 416439), (153, 138813), (459, 46271)]