21915641

素因数分解:

${\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{2551}}^1$

素因数の和:2644

約数の個数: 12

約数和(自身を含む): 24437952

約数和(自身を除く): 2522311

約数列:

[1, 11, 71, 121, 781, 2551, 8591, 28061, 181121, 308671, 1992331, 21915641]

約数ペア:

[(1, 21915641), (11, 1992331), (71, 308671), (121, 181121), (781, 28061), (2551, 8591)]