128156721

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{554791}}^1$

素因数の和:554812

約数の個数: 16

約数和(自身を含む): 213040128

約数和(自身を除く): 84883407

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 554791, 1664373, 3883537, 6102701, 11650611, 18308103, 42718907, 128156721]

約数ペア:

[(1, 128156721), (3, 42718907), (7, 18308103), (11, 11650611), (21, 6102701), (33, 3883537), (77, 1664373), (231, 554791)]