128942721

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{3907}}^1$

素因数の和:4125

約数の個数: 24

約数和(自身を含む): 197119520

約数和(自身を除く): 68176799

約数列:

[1, 3, 9, 19, 57, 171, 193, 579, 1737, 3667, 3907, 11001, 11721, 33003, 35163, 74233, 222699, 668097, 754051, 2262153, 6786459, 14326969, 42980907, 128942721]

約数ペア:

[(1, 128942721), (3, 42980907), (9, 14326969), (19, 6786459), (57, 2262153), (171, 754051), (193, 668097), (579, 222699), (1737, 74233), (3667, 35163), (3907, 33003), (11001, 11721)]