20898000

素因数分解:

$2^4\times 3^5\times 5^3\times {\mathrm{43}}^1$

素因数の和:81

約数の個数: 240

約数和(自身を含む): 77453376

約数和(自身を除く): 56555376

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 40, 43, 45, 48, 50, 54, 60, 72, 75, 80, 81, 86, 90, 100, 108, 120, 125, 129, 135, 144, 150, 162, 172, 180, 200, 215, 216, 225, 240, 243, 250, 258, 270, 300, 324, 344, 360, 375, 387, 400, 405, 430, 432, 450, 486, 500, 516, 540, 600, 645, 648, 675, 688, 720, 750, 774, 810, 860, 900, 972, 1000, 1032, 1075, 1080, 1125, 1161, 1200, 1215, 1290, 1296, 1350, 1500, 1548, 1620, 1720, 1800, 1935, 1944, 2000, 2025, 2064, 2150, 2160, 2250, 2322, 2430, 2580, 2700, 3000, 3096, 3225, 3240, 3375, 3440, 3483, 3600, 3870, 3888, 4050, 4300, 4500, 4644, 4860, 5160, 5375, 5400, 5805, 6000, 6075, 6192, 6450, 6480, 6750, 6966, 7740, 8100, 8600, 9000, 9288, 9675, 9720, 10125, 10320, 10449, 10750, 10800, 11610, 12150, 12900, 13500, 13932, 15480, 16125, 16200, 17200, 17415, 18000, 18576, 19350, 19440, 20250, 20898, 21500, 23220, 24300, 25800, 27000, 27864, 29025, 30375, 30960, 32250, 32400, 34830, 38700, 40500, 41796, 43000, 46440, 48375, 48600, 51600, 52245, 54000, 55728, 58050, 60750, 64500, 69660, 77400, 81000, 83592, 86000, 87075, 92880, 96750, 97200, 104490, 116100, 121500, 129000, 139320, 145125, 154800, 162000, 167184, 174150, 193500, 208980, 232200, 243000, 258000, 261225, 278640, 290250, 348300, 387000, 417960, 435375, 464400, 486000, 522450, 580500, 696600, 774000, 835920, 870750, 1044900, 1161000, 1306125, 1393200, 1741500, 2089800, 2322000, 2612250, 3483000, 4179600, 5224500, 6966000, 10449000, 20898000]

約数ペア:

[(1, 20898000), (2, 10449000), (3, 6966000), (4, 5224500), (5, 4179600), (6, 3483000), (8, 2612250), (9, 2322000), (10, 2089800), (12, 1741500), (15, 1393200), (16, 1306125), (18, 1161000), (20, 1044900), (24, 870750), (25, 835920), (27, 774000), (30, 696600), (36, 580500), (40, 522450), (43, 486000), (45, 464400), (48, 435375), (50, 417960), (54, 387000), (60, 348300), (72, 290250), (75, 278640), (80, 261225), (81, 258000), (86, 243000), (90, 232200), (100, 208980), (108, 193500), (120, 174150), (125, 167184), (129, 162000), (135, 154800), (144, 145125), (150, 139320), (162, 129000), (172, 121500), (180, 116100), (200, 104490), (215, 97200), (216, 96750), (225, 92880), (240, 87075), (243, 86000), (250, 83592), (258, 81000), (270, 77400), (300, 69660), (324, 64500), (344, 60750), (360, 58050), (375, 55728), (387, 54000), (400, 52245), (405, 51600), (430, 48600), (432, 48375), (450, 46440), (486, 43000), (500, 41796), (516, 40500), (540, 38700), (600, 34830), (645, 32400), (648, 32250), (675, 30960), (688, 30375), (720, 29025), (750, 27864), (774, 27000), (810, 25800), (860, 24300), (900, 23220), (972, 21500), (1000, 20898), (1032, 20250), (1075, 19440), (1080, 19350), (1125, 18576), (1161, 18000), (1200, 17415), (1215, 17200), (1290, 16200), (1296, 16125), (1350, 15480), (1500, 13932), (1548, 13500), (1620, 12900), (1720, 12150), (1800, 11610), (1935, 10800), (1944, 10750), (2000, 10449), (2025, 10320), (2064, 10125), (2150, 9720), (2160, 9675), (2250, 9288), (2322, 9000), (2430, 8600), (2580, 8100), (2700, 7740), (3000, 6966), (3096, 6750), (3225, 6480), (3240, 6450), (3375, 6192), (3440, 6075), (3483, 6000), (3600, 5805), (3870, 5400), (3888, 5375), (4050, 5160), (4300, 4860), (4500, 4644)]