20802790

素因数分解:

$2^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{6689}}^1$

素因数の和:7007

約数の個数: 16

約数和(自身を含む): 37571040

約数和(自身を除く): 16768250

約数列:

[1, 2, 5, 10, 311, 622, 1555, 3110, 6689, 13378, 33445, 66890, 2080279, 4160558, 10401395, 20802790]

約数ペア:

[(1, 20802790), (2, 10401395), (5, 4160558), (10, 2080279), (311, 66890), (622, 33445), (1555, 13378), (3110, 6689)]