20450521

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{293}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 25824960

約数和(自身を除く): 5374439

約数列:

[1, 7, 13, 59, 91, 169, 293, 413, 767, 1183, 2051, 3809, 5369, 9971, 17287, 26663, 49517, 69797, 121009, 224731, 346619, 1573117, 2921503, 20450521]

約数ペア:

[(1, 20450521), (7, 2921503), (13, 1573117), (59, 346619), (91, 224731), (169, 121009), (293, 69797), (413, 49517), (767, 26663), (1183, 17287), (2051, 9971), (3809, 5369)]