128639

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:94

約数の個数: 16

約数和(自身を含む): 165888

約数和(自身を除く): 37249

約数列:

[1, 7, 17, 23, 47, 119, 161, 329, 391, 799, 1081, 2737, 5593, 7567, 18377, 128639]

約数ペア:

[(1, 128639), (7, 18377), (17, 7567), (23, 5593), (47, 2737), (119, 1081), (161, 799), (329, 391)]