128678284

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{199811}}^1$

素因数の和:199845

約数の個数: 24

約数和(自身を含む): 268547328

約数和(自身を除く): 139869044

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 199811, 399622, 799244, 1398677, 2797354, 4595653, 5594708, 9191306, 18382612, 32169571, 64339142, 128678284]

約数ペア:

[(1, 128678284), (2, 64339142), (4, 32169571), (7, 18382612), (14, 9191306), (23, 5594708), (28, 4595653), (46, 2797354), (92, 1398677), (161, 799244), (322, 399622), (644, 199811)]