20005941137

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{640949}}^1$

素因数の和:640990

約数の個数: 20

約数和(自身を含む): 25134213300

約数和(自身を除く): 5128272163

約数列:

[1, 7, 13, 49, 91, 343, 637, 2401, 4459, 31213, 640949, 4486643, 8332337, 31406501, 58326359, 219845507, 408284513, 1538918549, 2857991591, 20005941137]

約数ペア:

[(1, 20005941137), (7, 2857991591), (13, 1538918549), (49, 408284513), (91, 219845507), (343, 58326359), (637, 31406501), (2401, 8332337), (4459, 4486643), (31213, 640949)]