20250000

素因数分解:

$2^4\times 3^4\times 5^6$

素因数の和:50

約数の個数: 175

約数和(自身を含む): 73260781

約数和(自身を除く): 53010781

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, 250, 270, 300, 324, 360, 375, 400, 405, 432, 450, 500, 540, 600, 625, 648, 675, 720, 750, 810, 900, 1000, 1080, 1125, 1200, 1250, 1296, 1350, 1500, 1620, 1800, 1875, 2000, 2025, 2160, 2250, 2500, 2700, 3000, 3125, 3240, 3375, 3600, 3750, 4050, 4500, 5000, 5400, 5625, 6000, 6250, 6480, 6750, 7500, 8100, 9000, 9375, 10000, 10125, 10800, 11250, 12500, 13500, 15000, 15625, 16200, 16875, 18000, 18750, 20250, 22500, 25000, 27000, 28125, 30000, 31250, 32400, 33750, 37500, 40500, 45000, 46875, 50000, 50625, 54000, 56250, 62500, 67500, 75000, 81000, 84375, 90000, 93750, 101250, 112500, 125000, 135000, 140625, 150000, 162000, 168750, 187500, 202500, 225000, 250000, 253125, 270000, 281250, 337500, 375000, 405000, 421875, 450000, 506250, 562500, 675000, 750000, 810000, 843750, 1012500, 1125000, 1265625, 1350000, 1687500, 2025000, 2250000, 2531250, 3375000, 4050000, 5062500, 6750000, 10125000, 20250000]

約数ペア:

[(1, 20250000), (2, 10125000), (3, 6750000), (4, 5062500), (5, 4050000), (6, 3375000), (8, 2531250), (9, 2250000), (10, 2025000), (12, 1687500), (15, 1350000), (16, 1265625), (18, 1125000), (20, 1012500), (24, 843750), (25, 810000), (27, 750000), (30, 675000), (36, 562500), (40, 506250), (45, 450000), (48, 421875), (50, 405000), (54, 375000), (60, 337500), (72, 281250), (75, 270000), (80, 253125), (81, 250000), (90, 225000), (100, 202500), (108, 187500), (120, 168750), (125, 162000), (135, 150000), (144, 140625), (150, 135000), (162, 125000), (180, 112500), (200, 101250), (216, 93750), (225, 90000), (240, 84375), (250, 81000), (270, 75000), (300, 67500), (324, 62500), (360, 56250), (375, 54000), (400, 50625), (405, 50000), (432, 46875), (450, 45000), (500, 40500), (540, 37500), (600, 33750), (625, 32400), (648, 31250), (675, 30000), (720, 28125), (750, 27000), (810, 25000), (900, 22500), (1000, 20250), (1080, 18750), (1125, 18000), (1200, 16875), (1250, 16200), (1296, 15625), (1350, 15000), (1500, 13500), (1620, 12500), (1800, 11250), (1875, 10800), (2000, 10125), (2025, 10000), (2160, 9375), (2250, 9000), (2500, 8100), (2700, 7500), (3000, 6750), (3125, 6480), (3240, 6250), (3375, 6000), (3600, 5625), (3750, 5400), (4050, 5000)]