20580000

素因数分解:

$2^5\times 3^1\times 5^4\times 7^3$

素因数の和:54

約数の個数: 240

約数和(自身を含む): 78724800

約数和(自身を除く): 58144800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 32, 35, 40, 42, 48, 49, 50, 56, 60, 70, 75, 80, 84, 96, 98, 100, 105, 112, 120, 125, 140, 147, 150, 160, 168, 175, 196, 200, 210, 224, 240, 245, 250, 280, 294, 300, 336, 343, 350, 375, 392, 400, 420, 480, 490, 500, 525, 560, 588, 600, 625, 672, 686, 700, 735, 750, 784, 800, 840, 875, 980, 1000, 1029, 1050, 1120, 1176, 1200, 1225, 1250, 1372, 1400, 1470, 1500, 1568, 1680, 1715, 1750, 1875, 1960, 2000, 2058, 2100, 2352, 2400, 2450, 2500, 2625, 2744, 2800, 2940, 3000, 3360, 3430, 3500, 3675, 3750, 3920, 4000, 4116, 4200, 4375, 4704, 4900, 5000, 5145, 5250, 5488, 5600, 5880, 6000, 6125, 6860, 7000, 7350, 7500, 7840, 8232, 8400, 8575, 8750, 9800, 10000, 10290, 10500, 10976, 11760, 12000, 12250, 13125, 13720, 14000, 14700, 15000, 16464, 16800, 17150, 17500, 18375, 19600, 20000, 20580, 21000, 23520, 24500, 25725, 26250, 27440, 28000, 29400, 30000, 30625, 32928, 34300, 35000, 36750, 39200, 41160, 42000, 42875, 49000, 51450, 52500, 54880, 58800, 60000, 61250, 68600, 70000, 73500, 82320, 84000, 85750, 91875, 98000, 102900, 105000, 117600, 122500, 128625, 137200, 140000, 147000, 164640, 171500, 183750, 196000, 205800, 210000, 214375, 245000, 257250, 274400, 294000, 343000, 367500, 411600, 420000, 428750, 490000, 514500, 588000, 643125, 686000, 735000, 823200, 857500, 980000, 1029000, 1286250, 1372000, 1470000, 1715000, 2058000, 2572500, 2940000, 3430000, 4116000, 5145000, 6860000, 10290000, 20580000]

約数ペア:

[(1, 20580000), (2, 10290000), (3, 6860000), (4, 5145000), (5, 4116000), (6, 3430000), (7, 2940000), (8, 2572500), (10, 2058000), (12, 1715000), (14, 1470000), (15, 1372000), (16, 1286250), (20, 1029000), (21, 980000), (24, 857500), (25, 823200), (28, 735000), (30, 686000), (32, 643125), (35, 588000), (40, 514500), (42, 490000), (48, 428750), (49, 420000), (50, 411600), (56, 367500), (60, 343000), (70, 294000), (75, 274400), (80, 257250), (84, 245000), (96, 214375), (98, 210000), (100, 205800), (105, 196000), (112, 183750), (120, 171500), (125, 164640), (140, 147000), (147, 140000), (150, 137200), (160, 128625), (168, 122500), (175, 117600), (196, 105000), (200, 102900), (210, 98000), (224, 91875), (240, 85750), (245, 84000), (250, 82320), (280, 73500), (294, 70000), (300, 68600), (336, 61250), (343, 60000), (350, 58800), (375, 54880), (392, 52500), (400, 51450), (420, 49000), (480, 42875), (490, 42000), (500, 41160), (525, 39200), (560, 36750), (588, 35000), (600, 34300), (625, 32928), (672, 30625), (686, 30000), (700, 29400), (735, 28000), (750, 27440), (784, 26250), (800, 25725), (840, 24500), (875, 23520), (980, 21000), (1000, 20580), (1029, 20000), (1050, 19600), (1120, 18375), (1176, 17500), (1200, 17150), (1225, 16800), (1250, 16464), (1372, 15000), (1400, 14700), (1470, 14000), (1500, 13720), (1568, 13125), (1680, 12250), (1715, 12000), (1750, 11760), (1875, 10976), (1960, 10500), (2000, 10290), (2058, 10000), (2100, 9800), (2352, 8750), (2400, 8575), (2450, 8400), (2500, 8232), (2625, 7840), (2744, 7500), (2800, 7350), (2940, 7000), (3000, 6860), (3360, 6125), (3430, 6000), (3500, 5880), (3675, 5600), (3750, 5488), (3920, 5250), (4000, 5145), (4116, 5000), (4200, 4900), (4375, 4704)]