128205721

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{3001}}^1$

素因数の和:3384

約数の個数: 16

約数和(自身を含む): 155623680

約数和(自身を除く): 27417959

約数列:

[1, 7, 17, 119, 359, 2513, 3001, 6103, 21007, 42721, 51017, 357119, 1077359, 7541513, 18315103, 128205721]

約数ペア:

[(1, 128205721), (7, 18315103), (17, 7541513), (119, 1077359), (359, 357119), (2513, 51017), (3001, 42721), (6103, 21007)]