21383040

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:109

約数の個数: 256

約数和(自身を含む): 81861120

約数和(自身を除く): 60478080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 37, 40, 42, 43, 48, 56, 60, 64, 70, 74, 80, 84, 86, 96, 105, 111, 112, 120, 128, 129, 140, 148, 160, 168, 172, 185, 192, 210, 215, 222, 224, 240, 258, 259, 280, 296, 301, 320, 336, 344, 370, 384, 420, 430, 444, 448, 480, 516, 518, 555, 560, 592, 602, 640, 645, 672, 688, 740, 777, 840, 860, 888, 896, 903, 960, 1032, 1036, 1110, 1120, 1184, 1204, 1290, 1295, 1344, 1376, 1480, 1505, 1554, 1591, 1680, 1720, 1776, 1806, 1920, 2064, 2072, 2220, 2240, 2368, 2408, 2580, 2590, 2688, 2752, 2960, 3010, 3108, 3182, 3360, 3440, 3552, 3612, 3885, 4128, 4144, 4440, 4480, 4515, 4736, 4773, 4816, 5160, 5180, 5504, 5920, 6020, 6216, 6364, 6720, 6880, 7104, 7224, 7770, 7955, 8256, 8288, 8880, 9030, 9546, 9632, 10320, 10360, 11137, 11840, 12040, 12432, 12728, 13440, 13760, 14208, 14448, 15540, 15910, 16512, 16576, 17760, 18060, 19092, 19264, 20640, 20720, 22274, 23680, 23865, 24080, 24864, 25456, 27520, 28896, 31080, 31820, 33152, 33411, 35520, 36120, 38184, 38528, 41280, 41440, 44548, 47730, 48160, 49728, 50912, 55685, 57792, 62160, 63640, 66822, 71040, 72240, 76368, 82560, 82880, 89096, 95460, 96320, 99456, 101824, 111370, 115584, 124320, 127280, 133644, 144480, 152736, 165760, 167055, 178192, 190920, 192640, 203648, 222740, 248640, 254560, 267288, 288960, 305472, 334110, 356384, 381840, 445480, 497280, 509120, 534576, 577920, 610944, 668220, 712768, 763680, 890960, 1018240, 1069152, 1336440, 1425536, 1527360, 1781920, 2138304, 2672880, 3054720, 3563840, 4276608, 5345760, 7127680, 10691520, 21383040]

約数ペア:

[(1, 21383040), (2, 10691520), (3, 7127680), (4, 5345760), (5, 4276608), (6, 3563840), (7, 3054720), (8, 2672880), (10, 2138304), (12, 1781920), (14, 1527360), (15, 1425536), (16, 1336440), (20, 1069152), (21, 1018240), (24, 890960), (28, 763680), (30, 712768), (32, 668220), (35, 610944), (37, 577920), (40, 534576), (42, 509120), (43, 497280), (48, 445480), (56, 381840), (60, 356384), (64, 334110), (70, 305472), (74, 288960), (80, 267288), (84, 254560), (86, 248640), (96, 222740), (105, 203648), (111, 192640), (112, 190920), (120, 178192), (128, 167055), (129, 165760), (140, 152736), (148, 144480), (160, 133644), (168, 127280), (172, 124320), (185, 115584), (192, 111370), (210, 101824), (215, 99456), (222, 96320), (224, 95460), (240, 89096), (258, 82880), (259, 82560), (280, 76368), (296, 72240), (301, 71040), (320, 66822), (336, 63640), (344, 62160), (370, 57792), (384, 55685), (420, 50912), (430, 49728), (444, 48160), (448, 47730), (480, 44548), (516, 41440), (518, 41280), (555, 38528), (560, 38184), (592, 36120), (602, 35520), (640, 33411), (645, 33152), (672, 31820), (688, 31080), (740, 28896), (777, 27520), (840, 25456), (860, 24864), (888, 24080), (896, 23865), (903, 23680), (960, 22274), (1032, 20720), (1036, 20640), (1110, 19264), (1120, 19092), (1184, 18060), (1204, 17760), (1290, 16576), (1295, 16512), (1344, 15910), (1376, 15540), (1480, 14448), (1505, 14208), (1554, 13760), (1591, 13440), (1680, 12728), (1720, 12432), (1776, 12040), (1806, 11840), (1920, 11137), (2064, 10360), (2072, 10320), (2220, 9632), (2240, 9546), (2368, 9030), (2408, 8880), (2580, 8288), (2590, 8256), (2688, 7955), (2752, 7770), (2960, 7224), (3010, 7104), (3108, 6880), (3182, 6720), (3360, 6364), (3440, 6216), (3552, 6020), (3612, 5920), (3885, 5504), (4128, 5180), (4144, 5160), (4440, 4816), (4480, 4773), (4515, 4736)]