21779560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49499}}^1$

素因数の和:49521

約数の個数: 32

約数和(自身を含む): 53460000

約数和(自身を除く): 31680440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49499, 98998, 197996, 247495, 395992, 494990, 544489, 989980, 1088978, 1979960, 2177956, 2722445, 4355912, 5444890, 10889780, 21779560]

約数ペア:

[(1, 21779560), (2, 10889780), (4, 5444890), (5, 4355912), (8, 2722445), (10, 2177956), (11, 1979960), (20, 1088978), (22, 989980), (40, 544489), (44, 494990), (55, 395992), (88, 247495), (110, 197996), (220, 98998), (440, 49499)]