256936239

素因数分解:

$3^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{9923}}^1$

素因数の和:10076

約数の個数: 32

約数和(自身を含む): 438243840

約数和(自身を除く): 181307601

約数列:

[1, 3, 7, 9, 21, 27, 63, 137, 189, 411, 959, 1233, 2877, 3699, 8631, 9923, 25893, 29769, 69461, 89307, 208383, 267921, 625149, 1359451, 1875447, 4078353, 9516157, 12235059, 28548471, 36705177, 85645413, 256936239]

約数ペア:

[(1, 256936239), (3, 85645413), (7, 36705177), (9, 28548471), (21, 12235059), (27, 9516157), (63, 4078353), (137, 1875447), (189, 1359451), (411, 625149), (959, 267921), (1233, 208383), (2877, 89307), (3699, 69461), (8631, 29769), (9923, 25893)]