81749493

素因数分解:

$3^4\times 7^2\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:548

約数の個数: 60

約数和(自身を含む): 145664640

約数和(自身を除く): 63915147

約数列:

[1, 3, 7, 9, 21, 27, 43, 49, 63, 81, 129, 147, 189, 301, 387, 441, 479, 567, 903, 1161, 1323, 1437, 2107, 2709, 3353, 3483, 3969, 4311, 6321, 8127, 10059, 12933, 18963, 20597, 23471, 24381, 30177, 38799, 56889, 61791, 70413, 90531, 144179, 170667, 185373, 211239, 271593, 432537, 556119, 633717, 1009253, 1297611, 1668357, 1901151, 3027759, 3892833, 9083277, 11678499, 27249831, 81749493]

約数ペア:

[(1, 81749493), (3, 27249831), (7, 11678499), (9, 9083277), (21, 3892833), (27, 3027759), (43, 1901151), (49, 1668357), (63, 1297611), (81, 1009253), (129, 633717), (147, 556119), (189, 432537), (301, 271593), (387, 211239), (441, 185373), (479, 170667), (567, 144179), (903, 90531), (1161, 70413), (1323, 61791), (1437, 56889), (2107, 38799), (2709, 30177), (3353, 24381), (3483, 23471), (3969, 20597), (4311, 18963), (6321, 12933), (8127, 10059)]