638660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2903}}^1$

素因数の和:2923

約数の個数: 24

約数和(自身を含む): 1463616

約数和(自身を除く): 824956

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 2903, 5806, 11612, 14515, 29030, 31933, 58060, 63866, 127732, 159665, 319330, 638660]

約数ペア:

[(1, 638660), (2, 319330), (4, 159665), (5, 127732), (10, 63866), (11, 58060), (20, 31933), (22, 29030), (44, 14515), (55, 11612), (110, 5806), (220, 2903)]