20010000

素因数分解:

$2^4\times 3^1\times 5^4\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:83

約数の個数: 200

約数和(自身を含む): 69727680

約数和(自身を除く): 49717680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 25, 29, 30, 40, 46, 48, 50, 58, 60, 69, 75, 80, 87, 92, 100, 115, 116, 120, 125, 138, 145, 150, 174, 184, 200, 230, 232, 240, 250, 276, 290, 300, 345, 348, 368, 375, 400, 435, 460, 464, 500, 552, 575, 580, 600, 625, 667, 690, 696, 725, 750, 870, 920, 1000, 1104, 1150, 1160, 1200, 1250, 1334, 1380, 1392, 1450, 1500, 1725, 1740, 1840, 1875, 2000, 2001, 2175, 2300, 2320, 2500, 2668, 2760, 2875, 2900, 3000, 3335, 3450, 3480, 3625, 3750, 4002, 4350, 4600, 5000, 5336, 5520, 5750, 5800, 6000, 6670, 6900, 6960, 7250, 7500, 8004, 8625, 8700, 9200, 10000, 10005, 10672, 10875, 11500, 11600, 13340, 13800, 14375, 14500, 15000, 16008, 16675, 17250, 17400, 18125, 20010, 21750, 23000, 26680, 27600, 28750, 29000, 30000, 32016, 33350, 34500, 34800, 36250, 40020, 43125, 43500, 46000, 50025, 53360, 54375, 57500, 58000, 66700, 69000, 72500, 80040, 83375, 86250, 87000, 100050, 108750, 115000, 133400, 138000, 145000, 160080, 166750, 172500, 174000, 200100, 217500, 230000, 250125, 266800, 290000, 333500, 345000, 400200, 416875, 435000, 500250, 667000, 690000, 800400, 833750, 870000, 1000500, 1250625, 1334000, 1667500, 2001000, 2501250, 3335000, 4002000, 5002500, 6670000, 10005000, 20010000]

約数ペア:

[(1, 20010000), (2, 10005000), (3, 6670000), (4, 5002500), (5, 4002000), (6, 3335000), (8, 2501250), (10, 2001000), (12, 1667500), (15, 1334000), (16, 1250625), (20, 1000500), (23, 870000), (24, 833750), (25, 800400), (29, 690000), (30, 667000), (40, 500250), (46, 435000), (48, 416875), (50, 400200), (58, 345000), (60, 333500), (69, 290000), (75, 266800), (80, 250125), (87, 230000), (92, 217500), (100, 200100), (115, 174000), (116, 172500), (120, 166750), (125, 160080), (138, 145000), (145, 138000), (150, 133400), (174, 115000), (184, 108750), (200, 100050), (230, 87000), (232, 86250), (240, 83375), (250, 80040), (276, 72500), (290, 69000), (300, 66700), (345, 58000), (348, 57500), (368, 54375), (375, 53360), (400, 50025), (435, 46000), (460, 43500), (464, 43125), (500, 40020), (552, 36250), (575, 34800), (580, 34500), (600, 33350), (625, 32016), (667, 30000), (690, 29000), (696, 28750), (725, 27600), (750, 26680), (870, 23000), (920, 21750), (1000, 20010), (1104, 18125), (1150, 17400), (1160, 17250), (1200, 16675), (1250, 16008), (1334, 15000), (1380, 14500), (1392, 14375), (1450, 13800), (1500, 13340), (1725, 11600), (1740, 11500), (1840, 10875), (1875, 10672), (2000, 10005), (2001, 10000), (2175, 9200), (2300, 8700), (2320, 8625), (2500, 8004), (2668, 7500), (2760, 7250), (2875, 6960), (2900, 6900), (3000, 6670), (3335, 6000), (3450, 5800), (3480, 5750), (3625, 5520), (3750, 5336), (4002, 5000), (4350, 4600)]