19901700000

素因数分解:

$2^5\times 3^7\times 5^5\times 7^1\times {\mathrm{13}}^1$

素因数の和:76

約数の個数: 1152

約数和(自身を含む): 90399214080

約数和(自身を除く): 70497514080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 25, 26, 27, 28, 30, 32, 35, 36, 39, 40, 42, 45, 48, 50, 52, 54, 56, 60, 63, 65, 70, 72, 75, 78, 80, 81, 84, 90, 91, 96, 100, 104, 105, 108, 112, 117, 120, 125, 126, 130, 135, 140, 144, 150, 156, 160, 162, 168, 175, 180, 182, 189, 195, 200, 208, 210, 216, 224, 225, 234, 240, 243, 250, 252, 260, 270, 273, 280, 288, 300, 312, 315, 324, 325, 336, 350, 351, 360, 364, 375, 378, 390, 400, 405, 416, 420, 432, 450, 455, 468, 480, 486, 500, 504, 520, 525, 540, 546, 560, 567, 585, 600, 624, 625, 630, 648, 650, 672, 675, 700, 702, 720, 728, 729, 750, 756, 780, 800, 810, 819, 840, 864, 875, 900, 910, 936, 945, 972, 975, 1000, 1008, 1040, 1050, 1053, 1080, 1092, 1120, 1125, 1134, 1170, 1200, 1215, 1248, 1250, 1260, 1296, 1300, 1350, 1365, 1400, 1404, 1440, 1456, 1458, 1500, 1512, 1560, 1575, 1620, 1625, 1638, 1680, 1701, 1750, 1755, 1800, 1820, 1872, 1875, 1890, 1944, 1950, 2000, 2016, 2025, 2080, 2100, 2106, 2160, 2184, 2187, 2250, 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16250, 16380, 16800, 16848, 16875, 17010, 17496, 17500, 17550, 18000, 18144, 18200, 18225, 18720, 18750, 18900, 18954, 19440, 19500, 19656, 20000, 20250, 20412, 20475, 21000, 21060, 21600, 21840, 21870, 21875, 22113, 22500, 22680, 22750, 23328, 23400, 23625, 24300, 24375, 24570, 25000, 25200, 25272, 25515, 26000, 26208, 26250, 26325, 27000, 27216, 27300, 28000, 28080, 28125, 28350, 28431, 29160, 29250, 29484, 30000, 30240, 30375, 30618, 31200, 31500, 31590, 32400, 32500, 32760, 33696, 33750, 34020, 34125, 34992, 35000, 35100, 36000, 36400, 36450, 36855, 37500, 37800, 37908, 38880, 39000, 39312, 39375, 40500, 40625, 40824, 40950, 42000, 42120, 42525, 43680, 43740, 43750, 43875, 44226, 45000, 45360, 45500, 46800, 47250, 47385, 48600, 48750, 49140, 50000, 50400, 50544, 50625, 51030, 52000, 52500, 52650, 54000, 54432, 54600, 54675, 56160, 56250, 56700, 56862, 56875, 58320, 58500, 58968, 60000, 60750, 61236, 61425, 63000, 63180, 64800, 65000, 65520, 65625, 66339, 67500, 68040, 68250, 69984, 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244944, 245700, 252000, 252720, 253125, 255150, 260000, 262500, 263250, 265356, 270000, 272160, 273000, 273375, 280800, 283500, 284310, 284375, 291600, 292500, 294840, 300000, 303264, 303750, 306180, 307125, 315000, 315900, 324000, 325000, 327600, 331695, 337500, 340200, 341250, 349920, 350000, 351000, 353808, 354375, 364000, 364500, 365625, 368550, 378000, 379080, 382725, 390000, 393120, 393750, 394875, 398034, 405000, 408240, 409500, 420000, 421200, 425250, 437400, 438750, 442260, 450000, 453600, 454896, 455000, 455625, 468000, 472500, 473850, 486000, 487500, 489888, 491400, 505440, 506250, 510300, 511875, 525000, 526500, 530712, 540000, 546000, 546750, 552825, 567000, 568620, 568750, 583200, 585000, 589680, 590625, 607500, 612360, 614250, 630000, 631800, 637875, 650000, 655200, 658125, 663390, 675000, 680400, 682500, 700000, 702000, 707616, 708750, 710775, 729000, 731250, 737100, 756000, 758160, 759375, 765450, 780000, 787500, 789750, 796068, 810000, 816480, 819000, 842400, 850500, 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約数ペア:

[(1, 19901700000), (2, 9950850000), (3, 6633900000), (4, 4975425000), (5, 3980340000), (6, 3316950000), (7, 2843100000), (8, 2487712500), (9, 2211300000), (10, 1990170000), (12, 1658475000), (13, 1530900000), (14, 1421550000), (15, 1326780000), (16, 1243856250), (18, 1105650000), (20, 995085000), (21, 947700000), (24, 829237500), (25, 796068000), (26, 765450000), (27, 737100000), (28, 710775000), (30, 663390000), (32, 621928125), (35, 568620000), (36, 552825000), (39, 510300000), (40, 497542500), (42, 473850000), (45, 442260000), (48, 414618750), (50, 398034000), (52, 382725000), (54, 368550000), (56, 355387500), (60, 331695000), (63, 315900000), (65, 306180000), (70, 284310000), (72, 276412500), (75, 265356000), (78, 255150000), (80, 248771250), (81, 245700000), (84, 236925000), (90, 221130000), (91, 218700000), (96, 207309375), (100, 199017000), (104, 191362500), (105, 189540000), (108, 184275000), (112, 177693750), (117, 170100000), (120, 165847500), (125, 159213600), (126, 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