1120000

素因数分解:

$2^8\times 5^4\times 7^1$

素因数の和:43

約数の個数: 90

約数和(自身を含む): 3192728

約数和(自身を除く): 2072728

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, 128, 140, 160, 175, 200, 224, 250, 256, 280, 320, 350, 400, 448, 500, 560, 625, 640, 700, 800, 875, 896, 1000, 1120, 1250, 1280, 1400, 1600, 1750, 1792, 2000, 2240, 2500, 2800, 3200, 3500, 4000, 4375, 4480, 5000, 5600, 6400, 7000, 8000, 8750, 8960, 10000, 11200, 14000, 16000, 17500, 20000, 22400, 28000, 32000, 35000, 40000, 44800, 56000, 70000, 80000, 112000, 140000, 160000, 224000, 280000, 560000, 1120000]

約数ペア:

[(1, 1120000), (2, 560000), (4, 280000), (5, 224000), (7, 160000), (8, 140000), (10, 112000), (14, 80000), (16, 70000), (20, 56000), (25, 44800), (28, 40000), (32, 35000), (35, 32000), (40, 28000), (50, 22400), (56, 20000), (64, 17500), (70, 16000), (80, 14000), (100, 11200), (112, 10000), (125, 8960), (128, 8750), (140, 8000), (160, 7000), (175, 6400), (200, 5600), (224, 5000), (250, 4480), (256, 4375), (280, 4000), (320, 3500), (350, 3200), (400, 2800), (448, 2500), (500, 2240), (560, 2000), (625, 1792), (640, 1750), (700, 1600), (800, 1400), (875, 1280), (896, 1250), (1000, 1120)]