880000

素因数分解:

$2^7\times 5^4\times {\mathrm{11}}^1$

素因数の和:45

約数の個数: 80

約数和(自身を含む): 2389860

約数和(自身を除く): 1509860

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 80, 88, 100, 110, 125, 128, 160, 176, 200, 220, 250, 275, 320, 352, 400, 440, 500, 550, 625, 640, 704, 800, 880, 1000, 1100, 1250, 1375, 1408, 1600, 1760, 2000, 2200, 2500, 2750, 3200, 3520, 4000, 4400, 5000, 5500, 6875, 7040, 8000, 8800, 10000, 11000, 13750, 16000, 17600, 20000, 22000, 27500, 35200, 40000, 44000, 55000, 80000, 88000, 110000, 176000, 220000, 440000, 880000]

約数ペア:

[(1, 880000), (2, 440000), (4, 220000), (5, 176000), (8, 110000), (10, 88000), (11, 80000), (16, 55000), (20, 44000), (22, 40000), (25, 35200), (32, 27500), (40, 22000), (44, 20000), (50, 17600), (55, 16000), (64, 13750), (80, 11000), (88, 10000), (100, 8800), (110, 8000), (125, 7040), (128, 6875), (160, 5500), (176, 5000), (200, 4400), (220, 4000), (250, 3520), (275, 3200), (320, 2750), (352, 2500), (400, 2200), (440, 2000), (500, 1760), (550, 1600), (625, 1408), (640, 1375), (704, 1250), (800, 1100), (880, 1000)]