28391272

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{661}}^1$

素因数の和:746

約数の個数: 64

約数和(自身を含む): 66729600

約数和(自身を除く): 38338328

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 59, 91, 104, 118, 182, 236, 364, 413, 472, 661, 728, 767, 826, 1322, 1534, 1652, 2644, 3068, 3304, 4627, 5288, 5369, 6136, 8593, 9254, 10738, 17186, 18508, 21476, 34372, 37016, 38999, 42952, 60151, 68744, 77998, 120302, 155996, 240604, 272993, 311992, 481208, 506987, 545986, 1013974, 1091972, 2027948, 2183944, 3548909, 4055896, 7097818, 14195636, 28391272]

約数ペア:

[(1, 28391272), (2, 14195636), (4, 7097818), (7, 4055896), (8, 3548909), (13, 2183944), (14, 2027948), (26, 1091972), (28, 1013974), (52, 545986), (56, 506987), (59, 481208), (91, 311992), (104, 272993), (118, 240604), (182, 155996), (236, 120302), (364, 77998), (413, 68744), (472, 60151), (661, 42952), (728, 38999), (767, 37016), (826, 34372), (1322, 21476), (1534, 18508), (1652, 17186), (2644, 10738), (3068, 9254), (3304, 8593), (4627, 6136), (5288, 5369)]