440000

素因数分解:

$2^6\times 5^4\times {\mathrm{11}}^1$

素因数の和:43

約数の個数: 70

約数和(自身を含む): 1190244

約数和(自身を除く): 750244

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, 160, 176, 200, 220, 250, 275, 320, 352, 400, 440, 500, 550, 625, 704, 800, 880, 1000, 1100, 1250, 1375, 1600, 1760, 2000, 2200, 2500, 2750, 3520, 4000, 4400, 5000, 5500, 6875, 8000, 8800, 10000, 11000, 13750, 17600, 20000, 22000, 27500, 40000, 44000, 55000, 88000, 110000, 220000, 440000]

約数ペア:

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