21790989

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{2137}}^1$

素因数の和:2257

約数の個数: 24

約数和(自身を含む): 34686912

約数和(自身を除く): 12895923

約数列:

[1, 3, 9, 11, 33, 99, 103, 309, 927, 1133, 2137, 3399, 6411, 10197, 19233, 23507, 70521, 211563, 220111, 660333, 1980999, 2421221, 7263663, 21790989]

約数ペア:

[(1, 21790989), (3, 7263663), (9, 2421221), (11, 1980999), (33, 660333), (99, 220111), (103, 211563), (309, 70521), (927, 23507), (1133, 19233), (2137, 10197), (3399, 6411)]