81021721

素因数分解:

${\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{9431}}^1$

素因数の和:9524

約数の個数: 12

約数和(自身を含む): 90320832

約数和(自身を除く): 9299111

約数列:

[1, 11, 71, 121, 781, 8591, 9431, 103741, 669601, 1141151, 7365611, 81021721]

約数ペア:

[(1, 81021721), (11, 7365611), (71, 1141151), (121, 669601), (781, 103741), (8591, 9431)]