81706149

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{30161}}^1$

素因数の和:30217

約数の個数: 24

約数和(自身を含む): 138021312

約数和(自身を除く): 56315163

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 30161, 90483, 211127, 271449, 633381, 1296923, 1900143, 3890769, 9078461, 11672307, 27235383, 81706149]

約数ペア:

[(1, 81706149), (3, 27235383), (7, 11672307), (9, 9078461), (21, 3890769), (43, 1900143), (63, 1296923), (129, 633381), (301, 271449), (387, 211127), (903, 90483), (2709, 30161)]