21654105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{499}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 16361895

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 263, 499, 789, 1315, 1497, 2495, 2893, 3945, 5489, 7485, 8679, 14465, 16467, 27445, 43395, 82335, 131237, 393711, 656185, 1443607, 1968555, 4330821, 7218035, 21654105]

約数ペア:

[(1, 21654105), (3, 7218035), (5, 4330821), (11, 1968555), (15, 1443607), (33, 656185), (55, 393711), (165, 131237), (263, 82335), (499, 43395), (789, 27445), (1315, 16467), (1497, 14465), (2495, 8679), (2893, 7485), (3945, 5489)]