21860971

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1217}}^1$

素因数の和:1322

約数の個数: 16

約数和(自身を含む): 25256448

約数和(自身を除く): 3395477

約数列:

[1, 11, 23, 71, 253, 781, 1217, 1633, 13387, 17963, 27991, 86407, 307901, 950477, 1987361, 21860971]

約数ペア:

[(1, 21860971), (11, 1987361), (23, 950477), (71, 307901), (253, 86407), (781, 27991), (1217, 17963), (1633, 13387)]