3500000

素因数分解:

$2^5\times 5^6\times 7^1$

素因数の和:47

約数の個数: 84

約数和(自身を含む): 9843624

約数和(自身を除く): 6343624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 160, 175, 200, 224, 250, 280, 350, 400, 500, 560, 625, 700, 800, 875, 1000, 1120, 1250, 1400, 1750, 2000, 2500, 2800, 3125, 3500, 4000, 4375, 5000, 5600, 6250, 7000, 8750, 10000, 12500, 14000, 15625, 17500, 20000, 21875, 25000, 28000, 31250, 35000, 43750, 50000, 62500, 70000, 87500, 100000, 109375, 125000, 140000, 175000, 218750, 250000, 350000, 437500, 500000, 700000, 875000, 1750000, 3500000]

約数ペア:

[(1, 3500000), (2, 1750000), (4, 875000), (5, 700000), (7, 500000), (8, 437500), (10, 350000), (14, 250000), (16, 218750), (20, 175000), (25, 140000), (28, 125000), (32, 109375), (35, 100000), (40, 87500), (50, 70000), (56, 62500), (70, 50000), (80, 43750), (100, 35000), (112, 31250), (125, 28000), (140, 25000), (160, 21875), (175, 20000), (200, 17500), (224, 15625), (250, 14000), (280, 12500), (350, 10000), (400, 8750), (500, 7000), (560, 6250), (625, 5600), (700, 5000), (800, 4375), (875, 4000), (1000, 3500), (1120, 3125), (1250, 2800), (1400, 2500), (1750, 2000)]