21321503

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1\times {\mathrm{283}}^1$

素因数の和:566

約数の個数: 16

約数和(自身を含む): 25082880

約数和(自身を除く): 3761377

約数列:

[1, 7, 47, 229, 283, 329, 1603, 1981, 10763, 13301, 64807, 75341, 93107, 453649, 3045929, 21321503]

約数ペア:

[(1, 21321503), (7, 3045929), (47, 453649), (229, 93107), (283, 75341), (329, 64807), (1603, 13301), (1981, 10763)]