21904641

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{563}}^1$

素因数の和:714

約数の個数: 32

約数和(自身を含む): 35735040

約数和(自身を除く): 13830399

約数列:

[1, 3, 9, 11, 27, 33, 99, 131, 297, 393, 563, 1179, 1441, 1689, 3537, 4323, 5067, 6193, 12969, 15201, 18579, 38907, 55737, 73753, 167211, 221259, 663777, 811283, 1991331, 2433849, 7301547, 21904641]

約数ペア:

[(1, 21904641), (3, 7301547), (9, 2433849), (11, 1991331), (27, 811283), (33, 663777), (99, 221259), (131, 167211), (297, 73753), (393, 55737), (563, 38907), (1179, 18579), (1441, 15201), (1689, 12969), (3537, 6193), (4323, 5067)]