1778000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{127}}^1$

素因数の和:157

約数の個数: 80

約数和(自身を含む): 4952064

約数和(自身を除く): 3174064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 125, 127, 140, 175, 200, 250, 254, 280, 350, 400, 500, 508, 560, 635, 700, 875, 889, 1000, 1016, 1270, 1400, 1750, 1778, 2000, 2032, 2540, 2800, 3175, 3500, 3556, 4445, 5080, 6350, 7000, 7112, 8890, 10160, 12700, 14000, 14224, 15875, 17780, 22225, 25400, 31750, 35560, 44450, 50800, 63500, 71120, 88900, 111125, 127000, 177800, 222250, 254000, 355600, 444500, 889000, 1778000]

約数ペア:

[(1, 1778000), (2, 889000), (4, 444500), (5, 355600), (7, 254000), (8, 222250), (10, 177800), (14, 127000), (16, 111125), (20, 88900), (25, 71120), (28, 63500), (35, 50800), (40, 44450), (50, 35560), (56, 31750), (70, 25400), (80, 22225), (100, 17780), (112, 15875), (125, 14224), (127, 14000), (140, 12700), (175, 10160), (200, 8890), (250, 7112), (254, 7000), (280, 6350), (350, 5080), (400, 4445), (500, 3556), (508, 3500), (560, 3175), (635, 2800), (700, 2540), (875, 2032), (889, 2000), (1000, 1778), (1016, 1750), (1270, 1400)]