209154440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{475351}}^1$

素因数の和:475373

約数の個数: 32

約数和(自身を含む): 513380160

約数和(自身を除く): 304225720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 475351, 950702, 1901404, 2376755, 3802808, 4753510, 5228861, 9507020, 10457722, 19014040, 20915444, 26144305, 41830888, 52288610, 104577220, 209154440]

約数ペア:

[(1, 209154440), (2, 104577220), (4, 52288610), (5, 41830888), (8, 26144305), (10, 20915444), (11, 19014040), (20, 10457722), (22, 9507020), (40, 5228861), (44, 4753510), (55, 3802808), (88, 2376755), (110, 1901404), (220, 950702), (440, 475351)]