21188681

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1153}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 23929344

約数和(自身を除く): 2740663

約数列:

[1, 17, 23, 47, 391, 799, 1081, 1153, 18377, 19601, 26519, 54191, 450823, 921247, 1246393, 21188681]

約数ペア:

[(1, 21188681), (17, 1246393), (23, 921247), (47, 450823), (391, 54191), (799, 26519), (1081, 19601), (1153, 18377)]