49000000

素因数分解:

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

素因数の和:56

約数の個数: 147

約数和(自身を含む): 141384909

約数和(自身を除く): 92384909

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, 15625, 15680, 17500, 19600, 20000, 21875, 24500, 25000, 28000, 30625, 31250, 35000, 39200, 40000, 43750, 49000, 50000, 56000, 61250, 62500, 70000, 78400, 87500, 98000, 100000, 109375, 122500, 125000, 140000, 153125, 175000, 196000, 200000, 218750, 245000, 250000, 280000, 306250, 350000, 392000, 437500, 490000, 500000, 612500, 700000, 765625, 875000, 980000, 1000000, 1225000, 1400000, 1531250, 1750000, 1960000, 2450000, 3062500, 3500000, 4900000, 6125000, 7000000, 9800000, 12250000, 24500000, 49000000]

約数ペア:

[(1, 49000000), (2, 24500000), (4, 12250000), (5, 9800000), (7, 7000000), (8, 6125000), (10, 4900000), (14, 3500000), (16, 3062500), (20, 2450000), (25, 1960000), (28, 1750000), (32, 1531250), (35, 1400000), (40, 1225000), (49, 1000000), (50, 980000), (56, 875000), (64, 765625), (70, 700000), (80, 612500), (98, 500000), (100, 490000), (112, 437500), (125, 392000), (140, 350000), (160, 306250), (175, 280000), (196, 250000), (200, 245000), (224, 218750), (245, 200000), (250, 196000), (280, 175000), (320, 153125), (350, 140000), (392, 125000), (400, 122500), (448, 109375), (490, 100000), (500, 98000), (560, 87500), (625, 78400), (700, 70000), (784, 62500), (800, 61250), (875, 56000), (980, 50000), (1000, 49000), (1120, 43750), (1225, 40000), (1250, 39200), (1400, 35000), (1568, 31250), (1600, 30625), (1750, 28000), (1960, 25000), (2000, 24500), (2240, 21875), (2450, 20000), (2500, 19600), (2800, 17500), (3125, 15680), (3136, 15625), (3500, 14000), (3920, 12500), (4000, 12250), (4375, 11200), (4900, 10000), (5000, 9800), (5600, 8750), (6125, 8000), (6250, 7840)]