20936421

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:626

約数の個数: 32

約数和(自身を含む): 34128000

約数和(自身を除く): 13191579

約数列:

[1, 3, 9, 11, 27, 33, 99, 157, 297, 449, 471, 1347, 1413, 1727, 4041, 4239, 4939, 5181, 12123, 14817, 15543, 44451, 46629, 70493, 133353, 211479, 634437, 775423, 1903311, 2326269, 6978807, 20936421]

約数ペア:

[(1, 20936421), (3, 6978807), (9, 2326269), (11, 1903311), (27, 775423), (33, 634437), (99, 211479), (157, 133353), (297, 70493), (449, 46629), (471, 44451), (1347, 15543), (1413, 14817), (1727, 12123), (4041, 5181), (4239, 4939)]