21072555

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7433}}^1$

素因数の和:7457

約数の個数: 40

約数和(自身を含む): 43176672

約数和(自身を除く): 22104117

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7433, 22299, 37165, 52031, 66897, 111495, 156093, 200691, 260155, 334485, 468279, 602073, 780465, 1003455, 1404837, 2341395, 3010365, 4214511, 7024185, 21072555]

約数ペア:

[(1, 21072555), (3, 7024185), (5, 4214511), (7, 3010365), (9, 2341395), (15, 1404837), (21, 1003455), (27, 780465), (35, 602073), (45, 468279), (63, 334485), (81, 260155), (105, 200691), (135, 156093), (189, 111495), (315, 66897), (405, 52031), (567, 37165), (945, 22299), (2835, 7433)]