81200000

素因数分解:

$2^7\times 5^5\times 7^1\times {\mathrm{29}}^1$

素因数の和:75

約数の個数: 192

約数和(自身を含む): 239047200

約数和(自身を除く): 157847200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 29, 32, 35, 40, 50, 56, 58, 64, 70, 80, 100, 112, 116, 125, 128, 140, 145, 160, 175, 200, 203, 224, 232, 250, 280, 290, 320, 350, 400, 406, 448, 464, 500, 560, 580, 625, 640, 700, 725, 800, 812, 875, 896, 928, 1000, 1015, 1120, 1160, 1250, 1400, 1450, 1600, 1624, 1750, 1856, 2000, 2030, 2240, 2320, 2500, 2800, 2900, 3125, 3200, 3248, 3500, 3625, 3712, 4000, 4060, 4375, 4480, 4640, 5000, 5075, 5600, 5800, 6250, 6496, 7000, 7250, 8000, 8120, 8750, 9280, 10000, 10150, 11200, 11600, 12500, 12992, 14000, 14500, 16000, 16240, 17500, 18125, 18560, 20000, 20300, 21875, 22400, 23200, 25000, 25375, 25984, 28000, 29000, 32480, 35000, 36250, 40000, 40600, 43750, 46400, 50000, 50750, 56000, 58000, 64960, 70000, 72500, 80000, 81200, 87500, 90625, 92800, 100000, 101500, 112000, 116000, 126875, 129920, 140000, 145000, 162400, 175000, 181250, 200000, 203000, 232000, 253750, 280000, 290000, 324800, 350000, 362500, 400000, 406000, 464000, 507500, 560000, 580000, 634375, 649600, 700000, 725000, 812000, 1015000, 1160000, 1268750, 1400000, 1450000, 1624000, 2030000, 2320000, 2537500, 2800000, 2900000, 3248000, 4060000, 5075000, 5800000, 8120000, 10150000, 11600000, 16240000, 20300000, 40600000, 81200000]

約数ペア:

[(1, 81200000), (2, 40600000), (4, 20300000), (5, 16240000), (7, 11600000), (8, 10150000), (10, 8120000), (14, 5800000), (16, 5075000), (20, 4060000), (25, 3248000), (28, 2900000), (29, 2800000), (32, 2537500), (35, 2320000), (40, 2030000), (50, 1624000), (56, 1450000), (58, 1400000), (64, 1268750), (70, 1160000), (80, 1015000), (100, 812000), (112, 725000), (116, 700000), (125, 649600), (128, 634375), (140, 580000), (145, 560000), (160, 507500), (175, 464000), (200, 406000), (203, 400000), (224, 362500), (232, 350000), (250, 324800), (280, 290000), (290, 280000), (320, 253750), (350, 232000), (400, 203000), (406, 200000), (448, 181250), (464, 175000), (500, 162400), (560, 145000), (580, 140000), (625, 129920), (640, 126875), (700, 116000), (725, 112000), (800, 101500), (812, 100000), (875, 92800), (896, 90625), (928, 87500), (1000, 81200), (1015, 80000), (1120, 72500), (1160, 70000), (1250, 64960), (1400, 58000), (1450, 56000), (1600, 50750), (1624, 50000), (1750, 46400), (1856, 43750), (2000, 40600), (2030, 40000), (2240, 36250), (2320, 35000), (2500, 32480), (2800, 29000), (2900, 28000), (3125, 25984), (3200, 25375), (3248, 25000), (3500, 23200), (3625, 22400), (3712, 21875), (4000, 20300), (4060, 20000), (4375, 18560), (4480, 18125), (4640, 17500), (5000, 16240), (5075, 16000), (5600, 14500), (5800, 14000), (6250, 12992), (6496, 12500), (7000, 11600), (7250, 11200), (8000, 10150), (8120, 10000), (8750, 9280)]