21045447

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18127}}^1$

素因数の和:18179

約数の個数: 16

約数和(自身を含む): 31905280

約数和(自身を除く): 10859833

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18127, 54381, 163143, 489429, 779461, 2338383, 7015149, 21045447]

約数ペア:

[(1, 21045447), (3, 7015149), (9, 2338383), (27, 779461), (43, 489429), (129, 163143), (387, 54381), (1161, 18127)]