21052800

素因数分解:

$2^7\times 3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:90

約数の個数: 288

約数和(自身を含む): 81389880

約数和(自身を除く): 60337080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 25, 30, 32, 34, 36, 40, 43, 45, 48, 50, 51, 60, 64, 68, 72, 75, 80, 85, 86, 90, 96, 100, 102, 120, 128, 129, 136, 144, 150, 153, 160, 170, 172, 180, 192, 200, 204, 215, 225, 240, 255, 258, 272, 288, 300, 306, 320, 340, 344, 360, 384, 387, 400, 408, 425, 430, 450, 480, 510, 516, 544, 576, 600, 612, 640, 645, 680, 688, 720, 731, 765, 774, 800, 816, 850, 860, 900, 960, 1020, 1032, 1075, 1088, 1152, 1200, 1224, 1275, 1290, 1360, 1376, 1440, 1462, 1530, 1548, 1600, 1632, 1700, 1720, 1800, 1920, 1935, 2040, 2064, 2150, 2176, 2193, 2400, 2448, 2550, 2580, 2720, 2752, 2880, 2924, 3060, 3096, 3200, 3225, 3264, 3400, 3440, 3600, 3655, 3825, 3870, 4080, 4128, 4300, 4386, 4800, 4896, 5100, 5160, 5440, 5504, 5760, 5848, 6120, 6192, 6450, 6528, 6579, 6800, 6880, 7200, 7310, 7650, 7740, 8160, 8256, 8600, 8772, 9600, 9675, 9792, 10200, 10320, 10880, 10965, 11696, 12240, 12384, 12900, 13158, 13600, 13760, 14400, 14620, 15300, 15480, 16320, 16512, 17200, 17544, 18275, 19350, 19584, 20400, 20640, 21930, 23392, 24480, 24768, 25800, 26316, 27200, 27520, 28800, 29240, 30600, 30960, 32640, 32895, 34400, 35088, 36550, 38700, 40800, 41280, 43860, 46784, 48960, 49536, 51600, 52632, 54400, 54825, 58480, 61200, 61920, 65790, 68800, 70176, 73100, 77400, 81600, 82560, 87720, 93568, 97920, 103200, 105264, 109650, 116960, 122400, 123840, 131580, 137600, 140352, 146200, 154800, 163200, 164475, 175440, 206400, 210528, 219300, 233920, 244800, 247680, 263160, 280704, 292400, 309600, 328950, 350880, 412800, 421056, 438600, 467840, 489600, 526320, 584800, 619200, 657900, 701760, 842112, 877200, 1052640, 1169600, 1238400, 1315800, 1403520, 1754400, 2105280, 2339200, 2631600, 3508800, 4210560, 5263200, 7017600, 10526400, 21052800]

約数ペア:

[(1, 21052800), (2, 10526400), (3, 7017600), (4, 5263200), (5, 4210560), (6, 3508800), (8, 2631600), (9, 2339200), (10, 2105280), (12, 1754400), (15, 1403520), (16, 1315800), (17, 1238400), (18, 1169600), (20, 1052640), (24, 877200), (25, 842112), (30, 701760), (32, 657900), (34, 619200), (36, 584800), (40, 526320), (43, 489600), (45, 467840), (48, 438600), (50, 421056), (51, 412800), (60, 350880), (64, 328950), (68, 309600), (72, 292400), (75, 280704), (80, 263160), (85, 247680), (86, 244800), (90, 233920), (96, 219300), (100, 210528), (102, 206400), (120, 175440), (128, 164475), (129, 163200), (136, 154800), (144, 146200), (150, 140352), (153, 137600), (160, 131580), (170, 123840), (172, 122400), (180, 116960), (192, 109650), (200, 105264), (204, 103200), (215, 97920), (225, 93568), (240, 87720), (255, 82560), (258, 81600), (272, 77400), (288, 73100), (300, 70176), (306, 68800), (320, 65790), (340, 61920), (344, 61200), (360, 58480), (384, 54825), (387, 54400), (400, 52632), (408, 51600), (425, 49536), (430, 48960), (450, 46784), (480, 43860), (510, 41280), (516, 40800), (544, 38700), (576, 36550), (600, 35088), (612, 34400), (640, 32895), (645, 32640), (680, 30960), (688, 30600), (720, 29240), (731, 28800), (765, 27520), (774, 27200), (800, 26316), (816, 25800), (850, 24768), (860, 24480), (900, 23392), (960, 21930), (1020, 20640), (1032, 20400), (1075, 19584), (1088, 19350), (1152, 18275), (1200, 17544), (1224, 17200), (1275, 16512), (1290, 16320), (1360, 15480), (1376, 15300), (1440, 14620), (1462, 14400), (1530, 13760), (1548, 13600), (1600, 13158), (1632, 12900), (1700, 12384), (1720, 12240), (1800, 11696), (1920, 10965), (1935, 10880), (2040, 10320), (2064, 10200), (2150, 9792), (2176, 9675), (2193, 9600), (2400, 8772), (2448, 8600), (2550, 8256), (2580, 8160), (2720, 7740), (2752, 7650), (2880, 7310), (2924, 7200), (3060, 6880), (3096, 6800), (3200, 6579), (3225, 6528), (3264, 6450), (3400, 6192), (3440, 6120), (3600, 5848), (3655, 5760), (3825, 5504), (3870, 5440), (4080, 5160), (4128, 5100), (4300, 4896), (4386, 4800)]