28951209

素因数分解:

$3^3\times 7^2\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:379

約数の個数: 48

約数和(自身を含む): 50707200

約数和(自身を除く): 21755991

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 79, 147, 189, 237, 277, 441, 553, 711, 831, 1323, 1659, 1939, 2133, 2493, 3871, 4977, 5817, 7479, 11613, 13573, 14931, 17451, 21883, 34839, 40719, 52353, 65649, 104517, 122157, 153181, 196947, 366471, 459543, 590841, 1072267, 1378629, 3216801, 4135887, 9650403, 28951209]

約数ペア:

[(1, 28951209), (3, 9650403), (7, 4135887), (9, 3216801), (21, 1378629), (27, 1072267), (49, 590841), (63, 459543), (79, 366471), (147, 196947), (189, 153181), (237, 122157), (277, 104517), (441, 65649), (553, 52353), (711, 40719), (831, 34839), (1323, 21883), (1659, 17451), (1939, 14931), (2133, 13573), (2493, 11613), (3871, 7479), (4977, 5817)]