28421505

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{90227}}^1$

素因数の和:90245

約数の個数: 24

約数和(自身を含む): 56302272

約数和(自身を除く): 27880767

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 90227, 270681, 451135, 631589, 812043, 1353405, 1894767, 3157945, 4060215, 5684301, 9473835, 28421505]

約数ペア:

[(1, 28421505), (3, 9473835), (5, 5684301), (7, 4060215), (9, 3157945), (15, 1894767), (21, 1353405), (35, 812043), (45, 631589), (63, 451135), (105, 270681), (315, 90227)]