20745560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47149}}^1$

素因数の和:47171

約数の個数: 32

約数和(自身を含む): 50922000

約数和(自身を除く): 30176440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47149, 94298, 188596, 235745, 377192, 471490, 518639, 942980, 1037278, 1885960, 2074556, 2593195, 4149112, 5186390, 10372780, 20745560]

約数ペア:

[(1, 20745560), (2, 10372780), (4, 5186390), (5, 4149112), (8, 2593195), (10, 2074556), (11, 1885960), (20, 1037278), (22, 942980), (40, 518639), (44, 471490), (55, 377192), (88, 235745), (110, 188596), (220, 94298), (440, 47149)]