28731880

素因数分解:

$2^3\times 5^1\times {\mathrm{677}}^1\times {\mathrm{1061}}^1$

素因数の和:1749

約数の個数: 32

約数和(自身を含む): 64803240

約数和(自身を除く): 36071360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 677, 1061, 1354, 2122, 2708, 3385, 4244, 5305, 5416, 6770, 8488, 10610, 13540, 21220, 27080, 42440, 718297, 1436594, 2873188, 3591485, 5746376, 7182970, 14365940, 28731880]

約数ペア:

[(1, 28731880), (2, 14365940), (4, 7182970), (5, 5746376), (8, 3591485), (10, 2873188), (20, 1436594), (40, 718297), (677, 42440), (1061, 27080), (1354, 21220), (2122, 13540), (2708, 10610), (3385, 8488), (4244, 6770), (5305, 5416)]