221909569

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{31481}}^1$

素因数の和:31560

約数の個数: 16

約数和(自身を含む): 272004480

約数和(自身を除く): 50094911

約数列:

[1, 7, 19, 53, 133, 371, 1007, 7049, 31481, 220367, 598139, 1668493, 4186973, 11679451, 31701367, 221909569]

約数ペア:

[(1, 221909569), (7, 31701367), (19, 11679451), (53, 4186973), (133, 1668493), (371, 598139), (1007, 220367), (7049, 31481)]