20905643

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4349}}^1$

素因数の和:4402

約数の個数: 16

約数和(自身を含む): 25056000

約数和(自身を除く): 4150357

約数列:

[1, 11, 19, 23, 209, 253, 437, 4349, 4807, 47839, 82631, 100027, 908941, 1100297, 1900513, 20905643]

約数ペア:

[(1, 20905643), (11, 1900513), (19, 1100297), (23, 908941), (209, 100027), (253, 82631), (437, 47839), (4349, 4807)]