289289

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2$

素因数の和:65

約数の個数: 24

約数和(自身を含む): 412608

約数和(自身を除く): 123319

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 289, 1001, 1309, 1547, 2023, 2431, 3179, 3757, 17017, 22253, 26299, 41327, 289289]

約数ペア:

[(1, 289289), (7, 41327), (11, 26299), (13, 22253), (17, 17017), (77, 3757), (91, 3179), (119, 2431), (143, 2023), (187, 1547), (221, 1309), (289, 1001)]