20905053

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31531}}^1$

素因数の和:31564

約数の個数: 16

約数和(自身を含む): 31784256

約数和(自身を除く): 10879203

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 31531, 94593, 409903, 536027, 1229709, 1608081, 6968351, 20905053]

約数ペア:

[(1, 20905053), (3, 6968351), (13, 1608081), (17, 1229709), (39, 536027), (51, 409903), (221, 94593), (663, 31531)]