28218267

素因数分解:

$3^3\times 7^3\times {\mathrm{11}}^1\times {\mathrm{277}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 53376000

約数和(自身を除く): 25157733

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 277, 297, 343, 441, 539, 693, 831, 1029, 1323, 1617, 1939, 2079, 2493, 3047, 3087, 3773, 4851, 5817, 7479, 9141, 9261, 11319, 13573, 14553, 17451, 21329, 27423, 33957, 40719, 52353, 63987, 82269, 95011, 101871, 122157, 149303, 191961, 285033, 366471, 447909, 575883, 855099, 1045121, 1343727, 2565297, 3135363, 4031181, 9406089, 28218267]

約数ペア:

[(1, 28218267), (3, 9406089), (7, 4031181), (9, 3135363), (11, 2565297), (21, 1343727), (27, 1045121), (33, 855099), (49, 575883), (63, 447909), (77, 366471), (99, 285033), (147, 191961), (189, 149303), (231, 122157), (277, 101871), (297, 95011), (343, 82269), (441, 63987), (539, 52353), (693, 40719), (831, 33957), (1029, 27423), (1323, 21329), (1617, 17451), (1939, 14553), (2079, 13573), (2493, 11319), (3047, 9261), (3087, 9141), (3773, 7479), (4851, 5817)]