2450000

素因数分解:

$2^4\times 5^5\times 7^2$

素因数の和:47

約数の個数: 90

約数和(自身を含む): 6901902

約数和(自身を除く): 4451902

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 125, 140, 175, 196, 200, 245, 250, 280, 350, 392, 400, 490, 500, 560, 625, 700, 784, 875, 980, 1000, 1225, 1250, 1400, 1750, 1960, 2000, 2450, 2500, 2800, 3125, 3500, 3920, 4375, 4900, 5000, 6125, 6250, 7000, 8750, 9800, 10000, 12250, 12500, 14000, 17500, 19600, 21875, 24500, 25000, 30625, 35000, 43750, 49000, 50000, 61250, 70000, 87500, 98000, 122500, 153125, 175000, 245000, 306250, 350000, 490000, 612500, 1225000, 2450000]

約数ペア:

[(1, 2450000), (2, 1225000), (4, 612500), (5, 490000), (7, 350000), (8, 306250), (10, 245000), (14, 175000), (16, 153125), (20, 122500), (25, 98000), (28, 87500), (35, 70000), (40, 61250), (49, 50000), (50, 49000), (56, 43750), (70, 35000), (80, 30625), (98, 25000), (100, 24500), (112, 21875), (125, 19600), (140, 17500), (175, 14000), (196, 12500), (200, 12250), (245, 10000), (250, 9800), (280, 8750), (350, 7000), (392, 6250), (400, 6125), (490, 5000), (500, 4900), (560, 4375), (625, 3920), (700, 3500), (784, 3125), (875, 2800), (980, 2500), (1000, 2450), (1225, 2000), (1250, 1960), (1400, 1750)]