19906018

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{4999}}^1$

素因数の和:5193

約数の個数: 16

約数和(自身を含む): 32760000

約数和(自身を除く): 12853982

約数列:

[1, 2, 11, 22, 181, 362, 1991, 3982, 4999, 9998, 54989, 109978, 904819, 1809638, 9953009, 19906018]

約数ペア:

[(1, 19906018), (2, 9953009), (11, 1809638), (22, 904819), (181, 109978), (362, 54989), (1991, 9998), (3982, 4999)]