128352020

素因数分解:

$2^2\times 5^1\times {\mathrm{2251}}^1\times {\mathrm{2851}}^1$

素因数の和:5111

約数の個数: 24

約数和(自身を含む): 269753568

約数和(自身を除く): 141401548

約数列:

[1, 2, 4, 5, 10, 20, 2251, 2851, 4502, 5702, 9004, 11255, 11404, 14255, 22510, 28510, 45020, 57020, 6417601, 12835202, 25670404, 32088005, 64176010, 128352020]

約数ペア:

[(1, 128352020), (2, 64176010), (4, 32088005), (5, 25670404), (10, 12835202), (20, 6417601), (2251, 57020), (2851, 45020), (4502, 28510), (5702, 22510), (9004, 14255), (11255, 11404)]