18765891

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{9521}}^1$

素因数の和:9603

約数の個数: 16

約数和(自身を含む): 28185120

約数和(自身を除く): 9419229

約数列:

[1, 3, 9, 27, 73, 219, 657, 1971, 9521, 28563, 85689, 257067, 695033, 2085099, 6255297, 18765891]

約数ペア:

[(1, 18765891), (3, 6255297), (9, 2085099), (27, 695033), (73, 257067), (219, 85689), (657, 28563), (1971, 9521)]