28141581

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 42658560

約数和(自身を除く): 14516979

約数列:

[1, 3, 13, 23, 39, 69, 137, 229, 299, 411, 687, 897, 1781, 2977, 3151, 5267, 5343, 8931, 9453, 15801, 31373, 40963, 68471, 94119, 122889, 205413, 407849, 721579, 1223547, 2164737, 9380527, 28141581]

約数ペア:

[(1, 28141581), (3, 9380527), (13, 2164737), (23, 1223547), (39, 721579), (69, 407849), (137, 205413), (229, 122889), (299, 94119), (411, 68471), (687, 40963), (897, 31373), (1781, 15801), (2977, 9453), (3151, 8931), (5267, 5343)]