20868029

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5333}}^1$

素因数の和:5396

約数の個数: 16

約数和(自身を含む): 26285952

約数和(自身を除く): 5417923

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5333, 37331, 69329, 229319, 485303, 1605233, 2981147, 20868029]

約数ペア:

[(1, 20868029), (7, 2981147), (13, 1605233), (43, 485303), (91, 229319), (301, 69329), (559, 37331), (3913, 5333)]