221551239

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{4691}}^1$

素因数の和:4887

約数の個数: 32

約数和(自身を含む): 365750784

約数和(自身を除く): 144199545

約数列:

[1, 3, 7, 13, 21, 39, 91, 173, 273, 519, 1211, 2249, 3633, 4691, 6747, 14073, 15743, 32837, 47229, 60983, 98511, 182949, 426881, 811543, 1280643, 2434629, 5680801, 10550059, 17042403, 31650177, 73850413, 221551239]

約数ペア:

[(1, 221551239), (3, 73850413), (7, 31650177), (13, 17042403), (21, 10550059), (39, 5680801), (91, 2434629), (173, 1280643), (273, 811543), (519, 426881), (1211, 182949), (2249, 98511), (3633, 60983), (4691, 47229), (6747, 32837), (14073, 15743)]