21539255

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13337}}^1$

素因数の和:13378

約数の個数: 16

約数和(自身を含む): 28810080

約数和(自身を除く): 7270825

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13337, 66685, 226729, 253403, 1133645, 1267015, 4307851, 21539255]

約数ペア:

[(1, 21539255), (5, 4307851), (17, 1267015), (19, 1133645), (85, 253403), (95, 226729), (323, 66685), (1615, 13337)]