20003885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{907}}^1$

素因数の和:1324

約数の個数: 16

約数和(自身を含む): 26281152

約数和(自身を除く): 6277267

約数列:

[1, 5, 11, 55, 401, 907, 2005, 4411, 4535, 9977, 22055, 49885, 363707, 1818535, 4000777, 20003885]

約数ペア:

[(1, 20003885), (5, 4000777), (11, 1818535), (55, 363707), (401, 49885), (907, 22055), (2005, 9977), (4411, 4535)]