1400000

素因数分解:

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

素因数の和:44

約数の個数: 84

約数和(自身を含む): 3968496

約数和(自身を除く): 2568496

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, 140, 160, 175, 200, 224, 250, 280, 320, 350, 400, 448, 500, 560, 625, 700, 800, 875, 1000, 1120, 1250, 1400, 1600, 1750, 2000, 2240, 2500, 2800, 3125, 3500, 4000, 4375, 5000, 5600, 6250, 7000, 8000, 8750, 10000, 11200, 12500, 14000, 17500, 20000, 21875, 25000, 28000, 35000, 40000, 43750, 50000, 56000, 70000, 87500, 100000, 140000, 175000, 200000, 280000, 350000, 700000, 1400000]

約数ペア:

[(1, 1400000), (2, 700000), (4, 350000), (5, 280000), (7, 200000), (8, 175000), (10, 140000), (14, 100000), (16, 87500), (20, 70000), (25, 56000), (28, 50000), (32, 43750), (35, 40000), (40, 35000), (50, 28000), (56, 25000), (64, 21875), (70, 20000), (80, 17500), (100, 14000), (112, 12500), (125, 11200), (140, 10000), (160, 8750), (175, 8000), (200, 7000), (224, 6250), (250, 5600), (280, 5000), (320, 4375), (350, 4000), (400, 3500), (448, 3125), (500, 2800), (560, 2500), (625, 2240), (700, 2000), (800, 1750), (875, 1600), (1000, 1400), (1120, 1250)]