256728745

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{43403}}^1$

素因数の和:43441

約数の個数: 24

約数和(自身を含む): 381260736

約数和(自身を除く): 124531991

約数列:

[1, 5, 7, 13, 35, 65, 91, 169, 455, 845, 1183, 5915, 43403, 217015, 303821, 564239, 1519105, 2821195, 3949673, 7335107, 19748365, 36675535, 51345749, 256728745]

約数ペア:

[(1, 256728745), (5, 51345749), (7, 36675535), (13, 19748365), (35, 7335107), (65, 3949673), (91, 2821195), (169, 1519105), (455, 564239), (845, 303821), (1183, 217015), (5915, 43403)]