28006209

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{709}}^1$

素因数の和:755

約数の個数: 64

約数和(自身を含む): 54528000

約数和(自身を除く): 26521791

約数列:

[1, 3, 7, 9, 11, 19, 21, 27, 33, 57, 63, 77, 99, 133, 171, 189, 209, 231, 297, 399, 513, 627, 693, 709, 1197, 1463, 1881, 2079, 2127, 3591, 4389, 4963, 5643, 6381, 7799, 13167, 13471, 14889, 19143, 23397, 39501, 40413, 44667, 54593, 70191, 94297, 121239, 134001, 148181, 163779, 210573, 282891, 363717, 444543, 491337, 848673, 1037267, 1333629, 1474011, 2546019, 3111801, 4000887, 9335403, 28006209]

約数ペア:

[(1, 28006209), (3, 9335403), (7, 4000887), (9, 3111801), (11, 2546019), (19, 1474011), (21, 1333629), (27, 1037267), (33, 848673), (57, 491337), (63, 444543), (77, 363717), (99, 282891), (133, 210573), (171, 163779), (189, 148181), (209, 134001), (231, 121239), (297, 94297), (399, 70191), (513, 54593), (627, 44667), (693, 40413), (709, 39501), (1197, 23397), (1463, 19143), (1881, 14889), (2079, 13471), (2127, 13167), (3591, 7799), (4389, 6381), (4963, 5643)]