21781078

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{5531}}^1$

素因数の和:5723

約数の個数: 16

約数和(自身を含む): 35847360

約数和(自身を除く): 14066282

約数列:

[1, 2, 11, 22, 179, 358, 1969, 3938, 5531, 11062, 60841, 121682, 990049, 1980098, 10890539, 21781078]

約数ペア:

[(1, 21781078), (2, 10890539), (11, 1980098), (22, 990049), (179, 121682), (358, 60841), (1969, 11062), (3938, 5531)]