18995841

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{997}}^1$

素因数の和:1105

約数の個数: 24

約数和(自身を含む): 28802280

約数和(自身を除く): 9806439

約数列:

[1, 3, 9, 29, 73, 87, 219, 261, 657, 997, 2117, 2991, 6351, 8973, 19053, 28913, 72781, 86739, 218343, 260217, 655029, 2110649, 6331947, 18995841]

約数ペア:

[(1, 18995841), (3, 6331947), (9, 2110649), (29, 655029), (73, 260217), (87, 218343), (219, 86739), (261, 72781), (657, 28913), (997, 19053), (2117, 8973), (2991, 6351)]