213069820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{343661}}^1$

素因数の和:343701

約数の個数: 24

約数和(自身を含む): 461881728

約数和(自身を除く): 248811908

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 343661, 687322, 1374644, 1718305, 3436610, 6873220, 10653491, 21306982, 42613964, 53267455, 106534910, 213069820]

約数ペア:

[(1, 213069820), (2, 106534910), (4, 53267455), (5, 42613964), (10, 21306982), (20, 10653491), (31, 6873220), (62, 3436610), (124, 1718305), (155, 1374644), (310, 687322), (620, 343661)]