71721181

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31721}}^1$

素因数の和:31764

約数の個数: 16

約数和(自身を含む): 91359360

約数和(自身を除く): 19638179

約数列:

[1, 7, 17, 19, 119, 133, 323, 2261, 31721, 222047, 539257, 602699, 3774799, 4218893, 10245883, 71721181]

約数ペア:

[(1, 71721181), (7, 10245883), (17, 4218893), (19, 3774799), (119, 602699), (133, 539257), (323, 222047), (2261, 31721)]