21907171

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{733}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 27334160

約数和(自身を除く): 5426989

約数列:

[1, 11, 13, 19, 121, 143, 209, 247, 733, 1573, 2299, 2717, 8063, 9529, 13927, 29887, 88693, 104819, 153197, 181051, 1153009, 1685167, 1991561, 21907171]

約数ペア:

[(1, 21907171), (11, 1991561), (13, 1685167), (19, 1153009), (121, 181051), (143, 153197), (209, 104819), (247, 88693), (733, 29887), (1573, 13927), (2299, 9529), (2717, 8063)]