21554819

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 26008416

約数和(自身を除く): 4453597

約数列:

[1, 11, 13, 71, 121, 143, 193, 781, 923, 1573, 2123, 2509, 8591, 10153, 13703, 23353, 27599, 111683, 150733, 178139, 303589, 1658063, 1959529, 21554819]

約数ペア:

[(1, 21554819), (11, 1959529), (13, 1658063), (71, 303589), (121, 178139), (143, 150733), (193, 111683), (781, 27599), (923, 23353), (1573, 13703), (2123, 10153), (2509, 8591)]