128865891

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{557861}}^1$

素因数の和:557882

約数の個数: 16

約数和(自身を含む): 214219008

約数和(自身を除く): 85353117

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 557861, 1673583, 3905027, 6136471, 11715081, 18409413, 42955297, 128865891]

約数ペア:

[(1, 128865891), (3, 42955297), (7, 18409413), (11, 11715081), (21, 6136471), (33, 3905027), (77, 1673583), (231, 557861)]