20275920000

素因数分解:

$2^7\times 3^5\times 5^4\times 7^1\times {\mathrm{149}}^1$

素因数の和:205

約数の個数: 960

約数和(自身を含む): 86990904000

約数和(自身を除く): 66714984000

約数列:

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704025, 708750, 715200, 720000, 724140, 745000, 750960, 756000, 772416, 777600, 782250, 804600, 810000, 834400, 838125, 840000, 844830, 850500, 858240, 894000, 901152, 905175, 907200, 938700, 945000, 965520, 972000, 1001280, 1005750, 1008000, 1013796, 1043000, 1063125, 1072800, 1080000, 1088640, 1117500, 1126440, 1134000, 1158624, 1173375, 1192000, 1201536, 1206900, 1215000, 1251600, 1260000, 1267245, 1287360, 1296000, 1303750, 1341000, 1351728, 1360800, 1408050, 1417500, 1430400, 1448280, 1490000, 1501920, 1508625, 1512000, 1544832, 1564500, 1609200, 1620000, 1668800, 1676250, 1680000, 1689660, 1701000, 1788000, 1802304, 1810350, 1814400, 1877400, 1890000, 1931040, 1944000, 1955625, 2002560, 2011500, 2027592, 2086000, 2112075, 2126250, 2145600, 2160000, 2235000, 2252880, 2268000, 2317248, 2346750, 2384000, 2413800, 2430000, 2503200, 2514375, 2520000, 2534490, 2574720, 2607500, 2682000, 2703456, 2721600, 2816100, 2835000, 2896560, 2980000, 3003840, 3017250, 3024000, 3129000, 3218400, 3240000, 3337600, 3352500, 3379320, 3402000, 3520125, 3576000, 3604608, 3620700, 3754800, 3780000, 3862080, 3888000, 3911250, 4023000, 4055184, 4172000, 4224150, 4252500, 4291200, 4470000, 4505760, 4525875, 4536000, 4634496, 4693500, 4827600, 4860000, 5006400, 5028750, 5040000, 5068980, 5215000, 5364000, 5406912, 5443200, 5632200, 5670000, 5793120, 5866875, 5960000, 6007680, 6034500, 6258000, 6336225, 6436800, 6480000, 6705000, 6758640, 6804000, 7040250, 7152000, 7241400, 7509600, 7543125, 7560000, 7724160, 7822500, 8046000, 8110368, 8344000, 8448300, 8505000, 8940000, 9011520, 9051750, 9072000, 9387000, 9655200, 9720000, 10012800, 10057500, 10137960, 10430000, 10560375, 10728000, 10813824, 11264400, 11340000, 11586240, 11733750, 11920000, 12069000, 12516000, 12672450, 12873600, 13410000, 13517280, 13608000, 14080500, 14482800, 15019200, 15086250, 15120000, 15645000, 16092000, 16220736, 16688000, 16896600, 17010000, 17600625, 17880000, 18023040, 18103500, 18774000, 19310400, 19440000, 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約数ペア:

[(1, 20275920000), (2, 10137960000), (3, 6758640000), (4, 5068980000), (5, 4055184000), (6, 3379320000), (7, 2896560000), (8, 2534490000), (9, 2252880000), (10, 2027592000), (12, 1689660000), (14, 1448280000), (15, 1351728000), (16, 1267245000), (18, 1126440000), (20, 1013796000), (21, 965520000), (24, 844830000), (25, 811036800), (27, 750960000), (28, 724140000), (30, 675864000), (32, 633622500), (35, 579312000), (36, 563220000), (40, 506898000), (42, 482760000), (45, 450576000), (48, 422415000), (50, 405518400), (54, 375480000), (56, 362070000), (60, 337932000), (63, 321840000), (64, 316811250), (70, 289656000), (72, 281610000), (75, 270345600), (80, 253449000), (81, 250320000), (84, 241380000), (90, 225288000), (96, 211207500), (100, 202759200), (105, 193104000), (108, 187740000), (112, 181035000), (120, 168966000), (125, 162207360), (126, 160920000), (128, 158405625), (135, 150192000), (140, 144828000), (144, 140805000), (149, 136080000), (150, 135172800), (160, 126724500), (162, 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