128758427

素因数分解:

$7^5\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 154354176

約数和(自身を除く): 25595749

約数列:

[1, 7, 47, 49, 163, 329, 343, 1141, 2303, 2401, 7661, 7987, 16121, 16807, 53627, 55909, 112847, 375389, 391363, 789929, 2627723, 2739541, 18394061, 128758427]

約数ペア:

[(1, 128758427), (7, 18394061), (47, 2739541), (49, 2627723), (163, 789929), (329, 391363), (343, 375389), (1141, 112847), (2303, 55909), (2401, 53627), (7661, 16807), (7987, 16121)]