21637447

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{5153}}^1$

素因数の和:5202

約数の個数: 16

約数和(自身を含む): 25976160

約数和(自身を除く): 4338713

約数列:

[1, 13, 17, 19, 221, 247, 323, 4199, 5153, 66989, 87601, 97907, 1138813, 1272791, 1664419, 21637447]

約数ペア:

[(1, 21637447), (13, 1664419), (17, 1272791), (19, 1138813), (221, 97907), (247, 87601), (323, 66989), (4199, 5153)]