28217553

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2521}}^1$

素因数の和:2585

約数の個数: 32

約数和(自身を含む): 47453952

約数和(自身を除く): 19236399

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 2521, 3731, 7563, 11193, 17647, 32773, 52941, 98319, 103361, 229411, 310083, 688233, 723527, 1343693, 2170581, 4031079, 9405851, 28217553]

約数ペア:

[(1, 28217553), (3, 9405851), (7, 4031079), (13, 2170581), (21, 1343693), (39, 723527), (41, 688233), (91, 310083), (123, 229411), (273, 103361), (287, 98319), (533, 52941), (861, 32773), (1599, 17647), (2521, 11193), (3731, 7563)]