18908649

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1$

素因数の和:437

約数の個数: 24

約数和(自身を含む): 28035072

約数和(自身を除く): 9126423

約数列:

[1, 3, 9, 71, 127, 213, 233, 381, 639, 699, 1143, 2097, 9017, 16543, 27051, 29591, 49629, 81153, 88773, 148887, 266319, 2100961, 6302883, 18908649]

約数ペア:

[(1, 18908649), (3, 6302883), (9, 2100961), (71, 266319), (127, 148887), (213, 88773), (233, 81153), (381, 49629), (639, 29591), (699, 27051), (1143, 16543), (2097, 9017)]