889000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{127}}^1$

素因数の和:155

約数の個数: 64

約数和(自身を含む): 2396160

約数和(自身を除く): 1507160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 127, 140, 175, 200, 250, 254, 280, 350, 500, 508, 635, 700, 875, 889, 1000, 1016, 1270, 1400, 1750, 1778, 2540, 3175, 3500, 3556, 4445, 5080, 6350, 7000, 7112, 8890, 12700, 15875, 17780, 22225, 25400, 31750, 35560, 44450, 63500, 88900, 111125, 127000, 177800, 222250, 444500, 889000]

約数ペア:

[(1, 889000), (2, 444500), (4, 222250), (5, 177800), (7, 127000), (8, 111125), (10, 88900), (14, 63500), (20, 44450), (25, 35560), (28, 31750), (35, 25400), (40, 22225), (50, 17780), (56, 15875), (70, 12700), (100, 8890), (125, 7112), (127, 7000), (140, 6350), (175, 5080), (200, 4445), (250, 3556), (254, 3500), (280, 3175), (350, 2540), (500, 1778), (508, 1750), (635, 1400), (700, 1270), (875, 1016), (889, 1000)]