21123421

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{479}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 24422400

約数和(自身を除く): 3298979

約数列:

[1, 11, 19, 209, 211, 479, 2321, 4009, 5269, 9101, 44099, 100111, 101069, 1111759, 1920311, 21123421]

約数ペア:

[(1, 21123421), (11, 1920311), (19, 1111759), (209, 101069), (211, 100111), (479, 44099), (2321, 9101), (4009, 5269)]