128429721

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{5647}}^1$

素因数の和:5698

約数の個数: 36

約数和(自身を含む): 223796352

約数和(自身を除く): 95366631

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 361, 399, 1083, 1197, 2527, 3249, 5647, 7581, 16941, 22743, 39529, 50823, 107293, 118587, 321879, 355761, 751051, 965637, 2038567, 2253153, 6115701, 6759459, 14269969, 18347103, 42809907, 128429721]

約数ペア:

[(1, 128429721), (3, 42809907), (7, 18347103), (9, 14269969), (19, 6759459), (21, 6115701), (57, 2253153), (63, 2038567), (133, 965637), (171, 751051), (361, 355761), (399, 321879), (1083, 118587), (1197, 107293), (2527, 50823), (3249, 39529), (5647, 22743), (7581, 16941)]