21439847

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{607}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 26703360

約数和(自身を除く): 5263513

約数列:

[1, 11, 13, 19, 143, 169, 209, 247, 607, 1859, 2717, 3211, 6677, 7891, 11533, 35321, 86801, 102583, 126863, 149929, 1128413, 1649219, 1949077, 21439847]

約数ペア:

[(1, 21439847), (11, 1949077), (13, 1649219), (19, 1128413), (143, 149929), (169, 126863), (209, 102583), (247, 86801), (607, 35321), (1859, 11533), (2717, 7891), (3211, 6677)]