18741231

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 27780480

約数和(自身を除く): 9039249

約数列:

[1, 3, 9, 71, 139, 211, 213, 417, 633, 639, 1251, 1899, 9869, 14981, 29329, 29607, 44943, 87987, 88821, 134829, 263961, 2082359, 6247077, 18741231]

約数ペア:

[(1, 18741231), (3, 6247077), (9, 2082359), (71, 263961), (139, 134829), (211, 88821), (213, 87987), (417, 44943), (633, 29607), (639, 29329), (1251, 14981), (1899, 9869)]