19811979

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1627}}^1$

素因数の和:1688

約数の個数: 32

約数和(自身を含む): 32820480

約数和(自身を除く): 13008501

約数列:

[1, 3, 9, 11, 27, 33, 41, 99, 123, 297, 369, 451, 1107, 1353, 1627, 4059, 4881, 12177, 14643, 17897, 43929, 53691, 66707, 161073, 200121, 483219, 600363, 733777, 1801089, 2201331, 6603993, 19811979]

約数ペア:

[(1, 19811979), (3, 6603993), (9, 2201331), (11, 1801089), (27, 733777), (33, 600363), (41, 483219), (99, 200121), (123, 161073), (297, 66707), (369, 53691), (451, 43929), (1107, 17897), (1353, 14643), (1627, 12177), (4059, 4881)]