21123454

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{457}}^1$

素因数の和:672

約数の個数: 24

約数和(自身を含む): 35086464

約数和(自身を除く): 13963010

約数列:

[1, 2, 11, 22, 121, 191, 242, 382, 457, 914, 2101, 4202, 5027, 10054, 23111, 46222, 55297, 87287, 110594, 174574, 960157, 1920314, 10561727, 21123454]

約数ペア:

[(1, 21123454), (2, 10561727), (11, 1920314), (22, 960157), (121, 174574), (191, 110594), (242, 87287), (382, 55297), (457, 46222), (914, 23111), (2101, 10054), (4202, 5027)]