320989840

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4057}}^1$

素因数の和:4136

約数の個数: 80

約数和(自身を含む): 797056128

約数和(自身を除く): 476066288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 43, 46, 80, 86, 92, 115, 172, 184, 215, 230, 344, 368, 430, 460, 688, 860, 920, 989, 1720, 1840, 1978, 3440, 3956, 4057, 4945, 7912, 8114, 9890, 15824, 16228, 19780, 20285, 32456, 39560, 40570, 64912, 79120, 81140, 93311, 162280, 174451, 186622, 324560, 348902, 373244, 466555, 697804, 746488, 872255, 933110, 1395608, 1492976, 1744510, 1866220, 2791216, 3489020, 3732440, 4012373, 6978040, 7464880, 8024746, 13956080, 16049492, 20061865, 32098984, 40123730, 64197968, 80247460, 160494920, 320989840]

約数ペア:

[(1, 320989840), (2, 160494920), (4, 80247460), (5, 64197968), (8, 40123730), (10, 32098984), (16, 20061865), (20, 16049492), (23, 13956080), (40, 8024746), (43, 7464880), (46, 6978040), (80, 4012373), (86, 3732440), (92, 3489020), (115, 2791216), (172, 1866220), (184, 1744510), (215, 1492976), (230, 1395608), (344, 933110), (368, 872255), (430, 746488), (460, 697804), (688, 466555), (860, 373244), (920, 348902), (989, 324560), (1720, 186622), (1840, 174451), (1978, 162280), (3440, 93311), (3956, 81140), (4057, 79120), (4945, 64912), (7912, 40570), (8114, 39560), (9890, 32456), (15824, 20285), (16228, 19780)]