21449780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97499}}^1$

素因数の和:97519

約数の個数: 24

約数和(自身を含む): 49140000

約数和(自身を除く): 27690220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 97499, 194998, 389996, 487495, 974990, 1072489, 1949980, 2144978, 4289956, 5362445, 10724890, 21449780]

約数ペア:

[(1, 21449780), (2, 10724890), (4, 5362445), (5, 4289956), (10, 2144978), (11, 1949980), (20, 1072489), (22, 974990), (44, 487495), (55, 389996), (110, 194998), (220, 97499)]