8678980

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1061}}^1$

素因数の和:1479

約数の個数: 24

約数和(自身を含む): 18287640

約数和(自身を除く): 9608660

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1061, 1636, 2045, 2122, 4090, 4244, 5305, 8180, 10610, 21220, 433949, 867898, 1735796, 2169745, 4339490, 8678980]

約数ペア:

[(1, 8678980), (2, 4339490), (4, 2169745), (5, 1735796), (10, 867898), (20, 433949), (409, 21220), (818, 10610), (1061, 8180), (1636, 5305), (2045, 4244), (2122, 4090)]