21181017

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 33586560

約数和(自身を除く): 12405543

約数列:

[1, 3, 11, 13, 33, 39, 97, 143, 291, 429, 509, 1067, 1261, 1527, 3201, 3783, 5599, 6617, 13871, 16797, 19851, 41613, 49373, 72787, 148119, 218361, 543103, 641849, 1629309, 1925547, 7060339, 21181017]

約数ペア:

[(1, 21181017), (3, 7060339), (11, 1925547), (13, 1629309), (33, 641849), (39, 543103), (97, 218361), (143, 148119), (291, 72787), (429, 49373), (509, 41613), (1067, 19851), (1261, 16797), (1527, 13871), (3201, 6617), (3783, 5599)]