21208317

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{709}}^1$

素因数の和:797

約数の個数: 24

約数和(自身を含む): 31183200

約数和(自身を除く): 9974883

約数列:

[1, 3, 13, 39, 59, 169, 177, 507, 709, 767, 2127, 2301, 9217, 9971, 27651, 29913, 41831, 119821, 125493, 359463, 543803, 1631409, 7069439, 21208317]

約数ペア:

[(1, 21208317), (3, 7069439), (13, 1631409), (39, 543803), (59, 359463), (169, 125493), (177, 119821), (507, 41831), (709, 29913), (767, 27651), (2127, 9971), (2301, 9217)]