28420749

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{11003}}^1$

素因数の和:11057

約数の個数: 24

約数和(自身を含む): 48065472

約数和(自身を除く): 19644723

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 11003, 33009, 77021, 99027, 231063, 451123, 693189, 1353369, 3157861, 4060107, 9473583, 28420749]

約数ペア:

[(1, 28420749), (3, 9473583), (7, 4060107), (9, 3157861), (21, 1353369), (41, 693189), (63, 451123), (123, 231063), (287, 99027), (369, 77021), (861, 33009), (2583, 11003)]