28143531

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 46475520

約数和(自身を除く): 18331989

約数列:

[1, 3, 9, 13, 27, 39, 59, 81, 117, 151, 177, 243, 351, 453, 531, 767, 1053, 1359, 1593, 1963, 2301, 3159, 4077, 4779, 5889, 6903, 8909, 12231, 14337, 17667, 20709, 26727, 36693, 53001, 62127, 80181, 115817, 159003, 186381, 240543, 347451, 477009, 721629, 1042353, 2164887, 3127059, 9381177, 28143531]

約数ペア:

[(1, 28143531), (3, 9381177), (9, 3127059), (13, 2164887), (27, 1042353), (39, 721629), (59, 477009), (81, 347451), (117, 240543), (151, 186381), (177, 159003), (243, 115817), (351, 80181), (453, 62127), (531, 53001), (767, 36693), (1053, 26727), (1359, 20709), (1593, 17667), (1963, 14337), (2301, 12231), (3159, 8909), (4077, 6903), (4779, 5889)]