21190400

素因数分解:

$2^8\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1$

素因数の和:87

約数の個数: 216

約数和(自身を含む): 66912384

約数和(自身を除く): 45721984

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 32, 35, 40, 43, 44, 50, 55, 56, 64, 70, 77, 80, 86, 88, 100, 110, 112, 128, 140, 154, 160, 172, 175, 176, 200, 215, 220, 224, 256, 275, 280, 301, 308, 320, 344, 350, 352, 385, 400, 430, 440, 448, 473, 550, 560, 602, 616, 640, 688, 700, 704, 770, 800, 860, 880, 896, 946, 1075, 1100, 1120, 1204, 1232, 1280, 1376, 1400, 1408, 1505, 1540, 1600, 1720, 1760, 1792, 1892, 1925, 2150, 2200, 2240, 2365, 2408, 2464, 2752, 2800, 2816, 3010, 3080, 3200, 3311, 3440, 3520, 3784, 3850, 4300, 4400, 4480, 4730, 4816, 4928, 5504, 5600, 6020, 6160, 6400, 6622, 6880, 7040, 7525, 7568, 7700, 8600, 8800, 8960, 9460, 9632, 9856, 11008, 11200, 11825, 12040, 12320, 13244, 13760, 14080, 15050, 15136, 15400, 16555, 17200, 17600, 18920, 19264, 19712, 22400, 23650, 24080, 24640, 26488, 27520, 30100, 30272, 30800, 33110, 34400, 35200, 37840, 38528, 44800, 47300, 48160, 49280, 52976, 55040, 60200, 60544, 61600, 66220, 68800, 70400, 75680, 77056, 82775, 94600, 96320, 98560, 105952, 120400, 121088, 123200, 132440, 137600, 151360, 165550, 189200, 192640, 211904, 240800, 246400, 264880, 275200, 302720, 331100, 378400, 385280, 423808, 481600, 492800, 529760, 605440, 662200, 756800, 847616, 963200, 1059520, 1324400, 1513600, 1926400, 2119040, 2648800, 3027200, 4238080, 5297600, 10595200, 21190400]

約数ペア:

[(1, 21190400), (2, 10595200), (4, 5297600), (5, 4238080), (7, 3027200), (8, 2648800), (10, 2119040), (11, 1926400), (14, 1513600), (16, 1324400), (20, 1059520), (22, 963200), (25, 847616), (28, 756800), (32, 662200), (35, 605440), (40, 529760), (43, 492800), (44, 481600), (50, 423808), (55, 385280), (56, 378400), (64, 331100), (70, 302720), (77, 275200), (80, 264880), (86, 246400), (88, 240800), (100, 211904), (110, 192640), (112, 189200), (128, 165550), (140, 151360), (154, 137600), (160, 132440), (172, 123200), (175, 121088), (176, 120400), (200, 105952), (215, 98560), (220, 96320), (224, 94600), (256, 82775), (275, 77056), (280, 75680), (301, 70400), (308, 68800), (320, 66220), (344, 61600), (350, 60544), (352, 60200), (385, 55040), (400, 52976), (430, 49280), (440, 48160), (448, 47300), (473, 44800), (550, 38528), (560, 37840), (602, 35200), (616, 34400), (640, 33110), (688, 30800), (700, 30272), (704, 30100), (770, 27520), (800, 26488), (860, 24640), (880, 24080), (896, 23650), (946, 22400), (1075, 19712), (1100, 19264), (1120, 18920), (1204, 17600), (1232, 17200), (1280, 16555), (1376, 15400), (1400, 15136), (1408, 15050), (1505, 14080), (1540, 13760), (1600, 13244), (1720, 12320), (1760, 12040), (1792, 11825), (1892, 11200), (1925, 11008), (2150, 9856), (2200, 9632), (2240, 9460), (2365, 8960), (2408, 8800), (2464, 8600), (2752, 7700), (2800, 7568), (2816, 7525), (3010, 7040), (3080, 6880), (3200, 6622), (3311, 6400), (3440, 6160), (3520, 6020), (3784, 5600), (3850, 5504), (4300, 4928), (4400, 4816), (4480, 4730)]