20806770520

素因数分解:

$2^3\times 5^1\times {\mathrm{9787}}^1\times {\mathrm{53149}}^1$

素因数の和:62947

約数の個数: 32

約数和(自身を含む): 46820898000

約数和(自身を除く): 26014127480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9787, 19574, 39148, 48935, 53149, 78296, 97870, 106298, 195740, 212596, 265745, 391480, 425192, 531490, 1062980, 2125960, 520169263, 1040338526, 2080677052, 2600846315, 4161354104, 5201692630, 10403385260, 20806770520]

約数ペア:

[(1, 20806770520), (2, 10403385260), (4, 5201692630), (5, 4161354104), (8, 2600846315), (10, 2080677052), (20, 1040338526), (40, 520169263), (9787, 2125960), (19574, 1062980), (39148, 531490), (48935, 425192), (53149, 391480), (78296, 265745), (97870, 212596), (106298, 195740)]