664710040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1\times {\mathrm{1129}}^1$

素因数の和:1540

約数の個数: 64

約数和(自身を含む): 1537704000

約数和(自身を除く): 872993960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 359, 410, 718, 820, 1129, 1436, 1640, 1795, 2258, 2872, 3590, 4516, 5645, 7180, 9032, 11290, 14360, 14719, 22580, 29438, 45160, 46289, 58876, 73595, 92578, 117752, 147190, 185156, 231445, 294380, 370312, 405311, 462890, 588760, 810622, 925780, 1621244, 1851560, 2026555, 3242488, 4053110, 8106220, 16212440, 16617751, 33235502, 66471004, 83088755, 132942008, 166177510, 332355020, 664710040]

約数ペア:

[(1, 664710040), (2, 332355020), (4, 166177510), (5, 132942008), (8, 83088755), (10, 66471004), (20, 33235502), (40, 16617751), (41, 16212440), (82, 8106220), (164, 4053110), (205, 3242488), (328, 2026555), (359, 1851560), (410, 1621244), (718, 925780), (820, 810622), (1129, 588760), (1436, 462890), (1640, 405311), (1795, 370312), (2258, 294380), (2872, 231445), (3590, 185156), (4516, 147190), (5645, 117752), (7180, 92578), (9032, 73595), (11290, 58876), (14360, 46289), (14719, 45160), (22580, 29438)]