291211880

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{11149}}^1$

素因数の和:11813

約数の個数: 32

約数和(自身を含む): 656289000

約数和(自身を除く): 365077120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 1306, 2612, 3265, 5224, 6530, 11149, 13060, 22298, 26120, 44596, 55745, 89192, 111490, 222980, 445960, 7280297, 14560594, 29121188, 36401485, 58242376, 72802970, 145605940, 291211880]

約数ペア:

[(1, 291211880), (2, 145605940), (4, 72802970), (5, 58242376), (8, 36401485), (10, 29121188), (20, 14560594), (40, 7280297), (653, 445960), (1306, 222980), (2612, 111490), (3265, 89192), (5224, 55745), (6530, 44596), (11149, 26120), (13060, 22298)]