21870000

素因数分解:

$2^4\times 3^7\times 5^4$

素因数の和:49

約数の個数: 200

約数和(自身を含む): 79412080

約数和(自身を除く): 57542080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 40, 45, 48, 50, 54, 60, 72, 75, 80, 81, 90, 100, 108, 120, 125, 135, 144, 150, 162, 180, 200, 216, 225, 240, 243, 250, 270, 300, 324, 360, 375, 400, 405, 432, 450, 486, 500, 540, 600, 625, 648, 675, 720, 729, 750, 810, 900, 972, 1000, 1080, 1125, 1200, 1215, 1250, 1296, 1350, 1458, 1500, 1620, 1800, 1875, 1944, 2000, 2025, 2160, 2187, 2250, 2430, 2500, 2700, 2916, 3000, 3240, 3375, 3600, 3645, 3750, 3888, 4050, 4374, 4500, 4860, 5000, 5400, 5625, 5832, 6000, 6075, 6480, 6750, 7290, 7500, 8100, 8748, 9000, 9720, 10000, 10125, 10800, 10935, 11250, 11664, 12150, 13500, 14580, 15000, 16200, 16875, 17496, 18000, 18225, 19440, 20250, 21870, 22500, 24300, 27000, 29160, 30000, 30375, 32400, 33750, 34992, 36450, 40500, 43740, 45000, 48600, 50625, 54000, 54675, 58320, 60750, 67500, 72900, 81000, 87480, 90000, 91125, 97200, 101250, 109350, 121500, 135000, 145800, 151875, 162000, 174960, 182250, 202500, 218700, 243000, 270000, 273375, 291600, 303750, 364500, 405000, 437400, 455625, 486000, 546750, 607500, 729000, 810000, 874800, 911250, 1093500, 1215000, 1366875, 1458000, 1822500, 2187000, 2430000, 2733750, 3645000, 4374000, 5467500, 7290000, 10935000, 21870000]

約数ペア:

[(1, 21870000), (2, 10935000), (3, 7290000), (4, 5467500), (5, 4374000), (6, 3645000), (8, 2733750), (9, 2430000), (10, 2187000), (12, 1822500), (15, 1458000), (16, 1366875), (18, 1215000), (20, 1093500), (24, 911250), (25, 874800), (27, 810000), (30, 729000), (36, 607500), (40, 546750), (45, 486000), (48, 455625), (50, 437400), (54, 405000), (60, 364500), (72, 303750), (75, 291600), (80, 273375), (81, 270000), (90, 243000), (100, 218700), (108, 202500), (120, 182250), (125, 174960), (135, 162000), (144, 151875), (150, 145800), (162, 135000), (180, 121500), (200, 109350), (216, 101250), (225, 97200), (240, 91125), (243, 90000), (250, 87480), (270, 81000), (300, 72900), (324, 67500), (360, 60750), (375, 58320), (400, 54675), (405, 54000), (432, 50625), (450, 48600), (486, 45000), (500, 43740), (540, 40500), (600, 36450), (625, 34992), (648, 33750), (675, 32400), (720, 30375), (729, 30000), (750, 29160), (810, 27000), (900, 24300), (972, 22500), (1000, 21870), (1080, 20250), (1125, 19440), (1200, 18225), (1215, 18000), (1250, 17496), (1296, 16875), (1350, 16200), (1458, 15000), (1500, 14580), (1620, 13500), (1800, 12150), (1875, 11664), (1944, 11250), (2000, 10935), (2025, 10800), (2160, 10125), (2187, 10000), (2250, 9720), (2430, 9000), (2500, 8748), (2700, 8100), (2916, 7500), (3000, 7290), (3240, 6750), (3375, 6480), (3600, 6075), (3645, 6000), (3750, 5832), (3888, 5625), (4050, 5400), (4374, 5000), (4500, 4860)]