21241395

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67433}}^1$

素因数の和:67451

約数の個数: 24

約数和(自身を含む): 42078816

約数和(自身を除く): 20837421

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67433, 202299, 337165, 472031, 606897, 1011495, 1416093, 2360155, 3034485, 4248279, 7080465, 21241395]

約数ペア:

[(1, 21241395), (3, 7080465), (5, 4248279), (7, 3034485), (9, 2360155), (15, 1416093), (21, 1011495), (35, 606897), (45, 472031), (63, 337165), (105, 202299), (315, 67433)]