21812441

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2221}}^1$

素因数の和:2312

約数の個数: 16

約数和(自身を含む): 26450688

約数和(自身を除く): 4638247

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2221, 9821, 15547, 51083, 135481, 357581, 948367, 3116063, 21812441]

約数ペア:

[(1, 21812441), (7, 3116063), (23, 948367), (61, 357581), (161, 135481), (427, 51083), (1403, 15547), (2221, 9821)]