9800000

素因数分解:

$2^6\times 5^5\times 7^2$

素因数の和:51

約数の個数: 126

約数和(自身を含む): 28275534

約数和(自身を除く): 18475534

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 80, 98, 100, 112, 125, 140, 160, 175, 196, 200, 224, 245, 250, 280, 320, 350, 392, 400, 448, 490, 500, 560, 625, 700, 784, 800, 875, 980, 1000, 1120, 1225, 1250, 1400, 1568, 1600, 1750, 1960, 2000, 2240, 2450, 2500, 2800, 3125, 3136, 3500, 3920, 4000, 4375, 4900, 5000, 5600, 6125, 6250, 7000, 7840, 8000, 8750, 9800, 10000, 11200, 12250, 12500, 14000, 15680, 17500, 19600, 20000, 21875, 24500, 25000, 28000, 30625, 35000, 39200, 40000, 43750, 49000, 50000, 56000, 61250, 70000, 78400, 87500, 98000, 100000, 122500, 140000, 153125, 175000, 196000, 200000, 245000, 280000, 306250, 350000, 392000, 490000, 612500, 700000, 980000, 1225000, 1400000, 1960000, 2450000, 4900000, 9800000]

約数ペア:

[(1, 9800000), (2, 4900000), (4, 2450000), (5, 1960000), (7, 1400000), (8, 1225000), (10, 980000), (14, 700000), (16, 612500), (20, 490000), (25, 392000), (28, 350000), (32, 306250), (35, 280000), (40, 245000), (49, 200000), (50, 196000), (56, 175000), (64, 153125), (70, 140000), (80, 122500), (98, 100000), (100, 98000), (112, 87500), (125, 78400), (140, 70000), (160, 61250), (175, 56000), (196, 50000), (200, 49000), (224, 43750), (245, 40000), (250, 39200), (280, 35000), (320, 30625), (350, 28000), (392, 25000), (400, 24500), (448, 21875), (490, 20000), (500, 19600), (560, 17500), (625, 15680), (700, 14000), (784, 12500), (800, 12250), (875, 11200), (980, 10000), (1000, 9800), (1120, 8750), (1225, 8000), (1250, 7840), (1400, 7000), (1568, 6250), (1600, 6125), (1750, 5600), (1960, 5000), (2000, 4900), (2240, 4375), (2450, 4000), (2500, 3920), (2800, 3500), (3125, 3136)]