81270903

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{90001}}^1$

素因数の和:90054

約数の個数: 16

約数和(自身を含む): 126722816

約数和(自身を除く): 45451913

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 90001, 270003, 630007, 1890021, 3870043, 11610129, 27090301, 81270903]

約数ペア:

[(1, 81270903), (3, 27090301), (7, 11610129), (21, 3870043), (43, 1890021), (129, 630007), (301, 270003), (903, 90001)]