55999780

素因数分解:

$2^2\times 5^1\times {\mathrm{2799989}}^1$

素因数の和:2799998

約数の個数: 12

約数和(自身を含む): 117599580

約数和(自身を除く): 61599800

約数列:

[1, 2, 4, 5, 10, 20, 2799989, 5599978, 11199956, 13999945, 27999890, 55999780]

約数ペア:

[(1, 55999780), (2, 27999890), (4, 13999945), (5, 11199956), (10, 5599978), (20, 2799989)]