8557780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5557}}^1$

素因数の和:5584

約数の個数: 48

約数和(自身を含む): 22409856

約数和(自身を除く): 13852076

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 5557, 11114, 22228, 27785, 38899, 55570, 61127, 77798, 111140, 122254, 155596, 194495, 244508, 305635, 388990, 427889, 611270, 777980, 855778, 1222540, 1711556, 2139445, 4278890, 8557780]

約数ペア:

[(1, 8557780), (2, 4278890), (4, 2139445), (5, 1711556), (7, 1222540), (10, 855778), (11, 777980), (14, 611270), (20, 427889), (22, 388990), (28, 305635), (35, 244508), (44, 194495), (55, 155596), (70, 122254), (77, 111140), (110, 77798), (140, 61127), (154, 55570), (220, 38899), (308, 27785), (385, 22228), (770, 11114), (1540, 5557)]