128622920

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{16661}}^1$

素因数の和:16865

約数の個数: 32

約数和(自身を含む): 290918520

約数和(自身を除く): 162295600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 16661, 33322, 66644, 83305, 133288, 166610, 333220, 666440, 3215573, 6431146, 12862292, 16077865, 25724584, 32155730, 64311460, 128622920]

約数ペア:

[(1, 128622920), (2, 64311460), (4, 32155730), (5, 25724584), (8, 16077865), (10, 12862292), (20, 6431146), (40, 3215573), (193, 666440), (386, 333220), (772, 166610), (965, 133288), (1544, 83305), (1930, 66644), (3860, 33322), (7720, 16661)]