20111000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:71

約数の個数: 192

約数和(自身を含む): 61663680

約数和(自身を除く): 41552680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 17, 20, 25, 26, 28, 34, 35, 40, 50, 52, 56, 65, 68, 70, 85, 91, 100, 104, 119, 125, 130, 136, 140, 169, 170, 175, 182, 200, 221, 238, 250, 260, 280, 325, 338, 340, 350, 364, 425, 442, 455, 476, 500, 520, 595, 650, 676, 680, 700, 728, 845, 850, 875, 884, 910, 952, 1000, 1105, 1183, 1190, 1300, 1352, 1400, 1547, 1625, 1690, 1700, 1750, 1768, 1820, 2125, 2210, 2275, 2366, 2380, 2600, 2873, 2975, 3094, 3250, 3380, 3400, 3500, 3640, 4225, 4250, 4420, 4550, 4732, 4760, 5525, 5746, 5915, 5950, 6188, 6500, 6760, 7000, 7735, 8450, 8500, 8840, 9100, 9464, 11050, 11375, 11492, 11830, 11900, 12376, 13000, 14365, 14875, 15470, 16900, 17000, 18200, 20111, 21125, 22100, 22750, 22984, 23660, 23800, 27625, 28730, 29575, 29750, 30940, 33800, 38675, 40222, 42250, 44200, 45500, 47320, 55250, 57460, 59150, 59500, 61880, 71825, 77350, 80444, 84500, 91000, 100555, 110500, 114920, 118300, 119000, 143650, 147875, 154700, 160888, 169000, 193375, 201110, 221000, 236600, 287300, 295750, 309400, 359125, 386750, 402220, 502775, 574600, 591500, 718250, 773500, 804440, 1005550, 1183000, 1436500, 1547000, 2011100, 2513875, 2873000, 4022200, 5027750, 10055500, 20111000]

約数ペア:

[(1, 20111000), (2, 10055500), (4, 5027750), (5, 4022200), (7, 2873000), (8, 2513875), (10, 2011100), (13, 1547000), (14, 1436500), (17, 1183000), (20, 1005550), (25, 804440), (26, 773500), (28, 718250), (34, 591500), (35, 574600), (40, 502775), (50, 402220), (52, 386750), (56, 359125), (65, 309400), (68, 295750), (70, 287300), (85, 236600), (91, 221000), (100, 201110), (104, 193375), (119, 169000), (125, 160888), (130, 154700), (136, 147875), (140, 143650), (169, 119000), (170, 118300), (175, 114920), (182, 110500), (200, 100555), (221, 91000), (238, 84500), (250, 80444), (260, 77350), (280, 71825), (325, 61880), (338, 59500), (340, 59150), (350, 57460), (364, 55250), (425, 47320), (442, 45500), (455, 44200), (476, 42250), (500, 40222), (520, 38675), (595, 33800), (650, 30940), (676, 29750), (680, 29575), (700, 28730), (728, 27625), (845, 23800), (850, 23660), (875, 22984), (884, 22750), (910, 22100), (952, 21125), (1000, 20111), (1105, 18200), (1183, 17000), (1190, 16900), (1300, 15470), (1352, 14875), (1400, 14365), (1547, 13000), (1625, 12376), (1690, 11900), (1700, 11830), (1750, 11492), (1768, 11375), (1820, 11050), (2125, 9464), (2210, 9100), (2275, 8840), (2366, 8500), (2380, 8450), (2600, 7735), (2873, 7000), (2975, 6760), (3094, 6500), (3250, 6188), (3380, 5950), (3400, 5915), (3500, 5746), (3640, 5525), (4225, 4760), (4250, 4732), (4420, 4550)]