219038980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{78791}}^1$

素因数の和:78939

約数の個数: 24

約数和(自身を含む): 463296960

約数和(自身を除く): 244257980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 78791, 157582, 315164, 393955, 787910, 1575820, 10951949, 21903898, 43807796, 54759745, 109519490, 219038980]

約数ペア:

[(1, 219038980), (2, 109519490), (4, 54759745), (5, 43807796), (10, 21903898), (20, 10951949), (139, 1575820), (278, 787910), (556, 393955), (695, 315164), (1390, 157582), (2780, 78791)]