18997891

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{5347}}^1$

素因数の和:5394

約数の個数: 16

約数和(自身を含む): 23103360

約数和(自身を除く): 4105469

約数列:

[1, 11, 17, 19, 187, 209, 323, 3553, 5347, 58817, 90899, 101593, 999889, 1117523, 1727081, 18997891]

約数ペア:

[(1, 18997891), (11, 1727081), (17, 1117523), (19, 999889), (187, 101593), (209, 90899), (323, 58817), (3553, 5347)]