251440000

素因数分解:

$2^7\times 5^4\times 7^1\times {\mathrm{449}}^1$

素因数の和:490

約数の個数: 160

約数和(自身を含む): 716958000

約数和(自身を除く): 465518000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 125, 128, 140, 160, 175, 200, 224, 250, 280, 320, 350, 400, 448, 449, 500, 560, 625, 640, 700, 800, 875, 896, 898, 1000, 1120, 1250, 1400, 1600, 1750, 1796, 2000, 2240, 2245, 2500, 2800, 3143, 3200, 3500, 3592, 4000, 4375, 4480, 4490, 5000, 5600, 6286, 7000, 7184, 8000, 8750, 8980, 10000, 11200, 11225, 12572, 14000, 14368, 15715, 16000, 17500, 17960, 20000, 22400, 22450, 25144, 28000, 28736, 31430, 35000, 35920, 40000, 44900, 50288, 56000, 56125, 57472, 62860, 70000, 71840, 78575, 80000, 89800, 100576, 112000, 112250, 125720, 140000, 143680, 157150, 179600, 201152, 224500, 251440, 280000, 280625, 287360, 314300, 359200, 392875, 402304, 449000, 502880, 560000, 561250, 628600, 718400, 785750, 898000, 1005760, 1122500, 1257200, 1436800, 1571500, 1796000, 1964375, 2011520, 2245000, 2514400, 3143000, 3592000, 3928750, 4490000, 5028800, 6286000, 7184000, 7857500, 8980000, 10057600, 12572000, 15715000, 17960000, 25144000, 31430000, 35920000, 50288000, 62860000, 125720000, 251440000]

約数ペア:

[(1, 251440000), (2, 125720000), (4, 62860000), (5, 50288000), (7, 35920000), (8, 31430000), (10, 25144000), (14, 17960000), (16, 15715000), (20, 12572000), (25, 10057600), (28, 8980000), (32, 7857500), (35, 7184000), (40, 6286000), (50, 5028800), (56, 4490000), (64, 3928750), (70, 3592000), (80, 3143000), (100, 2514400), (112, 2245000), (125, 2011520), (128, 1964375), (140, 1796000), (160, 1571500), (175, 1436800), (200, 1257200), (224, 1122500), (250, 1005760), (280, 898000), (320, 785750), (350, 718400), (400, 628600), (448, 561250), (449, 560000), (500, 502880), (560, 449000), (625, 402304), (640, 392875), (700, 359200), (800, 314300), (875, 287360), (896, 280625), (898, 280000), (1000, 251440), (1120, 224500), (1250, 201152), (1400, 179600), (1600, 157150), (1750, 143680), (1796, 140000), (2000, 125720), (2240, 112250), (2245, 112000), (2500, 100576), (2800, 89800), (3143, 80000), (3200, 78575), (3500, 71840), (3592, 70000), (4000, 62860), (4375, 57472), (4480, 56125), (4490, 56000), (5000, 50288), (5600, 44900), (6286, 40000), (7000, 35920), (7184, 35000), (8000, 31430), (8750, 28736), (8980, 28000), (10000, 25144), (11200, 22450), (11225, 22400), (12572, 20000), (14000, 17960), (14368, 17500), (15715, 16000)]