128342020

素因数分解:

$2^2\times 5^1\times {\mathrm{2011}}^1\times {\mathrm{3191}}^1$

素因数の和:5211

約数の個数: 24

約数和(自身を含む): 269736768

約数和(自身を除く): 141394748

約数列:

[1, 2, 4, 5, 10, 20, 2011, 3191, 4022, 6382, 8044, 10055, 12764, 15955, 20110, 31910, 40220, 63820, 6417101, 12834202, 25668404, 32085505, 64171010, 128342020]

約数ペア:

[(1, 128342020), (2, 64171010), (4, 32085505), (5, 25668404), (10, 12834202), (20, 6417101), (2011, 63820), (3191, 40220), (4022, 31910), (6382, 20110), (8044, 15955), (10055, 12764)]