15750000

素因数分解:

$2^4\times 3^2\times 5^6\times 7^1$

素因数の和:51

約数の個数: 210

約数和(自身を含む): 62967944

約数和(自身を除く): 47217944

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 28, 30, 35, 36, 40, 42, 45, 48, 50, 56, 60, 63, 70, 72, 75, 80, 84, 90, 100, 105, 112, 120, 125, 126, 140, 144, 150, 168, 175, 180, 200, 210, 225, 240, 250, 252, 280, 300, 315, 336, 350, 360, 375, 400, 420, 450, 500, 504, 525, 560, 600, 625, 630, 700, 720, 750, 840, 875, 900, 1000, 1008, 1050, 1125, 1200, 1250, 1260, 1400, 1500, 1575, 1680, 1750, 1800, 1875, 2000, 2100, 2250, 2500, 2520, 2625, 2800, 3000, 3125, 3150, 3500, 3600, 3750, 4200, 4375, 4500, 5000, 5040, 5250, 5625, 6000, 6250, 6300, 7000, 7500, 7875, 8400, 8750, 9000, 9375, 10000, 10500, 11250, 12500, 12600, 13125, 14000, 15000, 15625, 15750, 17500, 18000, 18750, 21000, 21875, 22500, 25000, 25200, 26250, 28125, 30000, 31250, 31500, 35000, 37500, 39375, 42000, 43750, 45000, 46875, 50000, 52500, 56250, 62500, 63000, 65625, 70000, 75000, 78750, 87500, 90000, 93750, 105000, 109375, 112500, 125000, 126000, 131250, 140625, 150000, 157500, 175000, 187500, 196875, 210000, 218750, 225000, 250000, 262500, 281250, 315000, 328125, 350000, 375000, 393750, 437500, 450000, 525000, 562500, 630000, 656250, 750000, 787500, 875000, 984375, 1050000, 1125000, 1312500, 1575000, 1750000, 1968750, 2250000, 2625000, 3150000, 3937500, 5250000, 7875000, 15750000]

約数ペア:

[(1, 15750000), (2, 7875000), (3, 5250000), (4, 3937500), (5, 3150000), (6, 2625000), (7, 2250000), (8, 1968750), (9, 1750000), (10, 1575000), (12, 1312500), (14, 1125000), (15, 1050000), (16, 984375), (18, 875000), (20, 787500), (21, 750000), (24, 656250), (25, 630000), (28, 562500), (30, 525000), (35, 450000), (36, 437500), (40, 393750), (42, 375000), (45, 350000), (48, 328125), (50, 315000), (56, 281250), (60, 262500), (63, 250000), (70, 225000), (72, 218750), (75, 210000), (80, 196875), (84, 187500), (90, 175000), (100, 157500), (105, 150000), (112, 140625), (120, 131250), (125, 126000), (126, 125000), (140, 112500), (144, 109375), (150, 105000), (168, 93750), (175, 90000), (180, 87500), (200, 78750), (210, 75000), (225, 70000), (240, 65625), (250, 63000), (252, 62500), (280, 56250), (300, 52500), (315, 50000), (336, 46875), (350, 45000), (360, 43750), (375, 42000), (400, 39375), (420, 37500), (450, 35000), (500, 31500), (504, 31250), (525, 30000), (560, 28125), (600, 26250), (625, 25200), (630, 25000), (700, 22500), (720, 21875), (750, 21000), (840, 18750), (875, 18000), (900, 17500), (1000, 15750), (1008, 15625), (1050, 15000), (1125, 14000), (1200, 13125), (1250, 12600), (1260, 12500), (1400, 11250), (1500, 10500), (1575, 10000), (1680, 9375), (1750, 9000), (1800, 8750), (1875, 8400), (2000, 7875), (2100, 7500), (2250, 7000), (2500, 6300), (2520, 6250), (2625, 6000), (2800, 5625), (3000, 5250), (3125, 5040), (3150, 5000), (3500, 4500), (3600, 4375), (3750, 4200)]