20407413

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{283}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 30106272

約数和(自身を除く): 9698859

約数列:

[1, 3, 13, 39, 43, 129, 283, 559, 849, 1677, 1849, 3679, 5547, 11037, 12169, 24037, 36507, 72111, 158197, 474591, 523267, 1569801, 6802471, 20407413]

約数ペア:

[(1, 20407413), (3, 6802471), (13, 1569801), (39, 523267), (43, 474591), (129, 158197), (283, 72111), (559, 36507), (849, 24037), (1677, 12169), (1849, 11037), (3679, 5547)]