139780040

素因数分解:

$2^3\times 5^1\times {\mathrm{3494501}}^1$

素因数の和:3494512

約数の個数: 16

約数和(自身を含む): 314505180

約数和(自身を除く): 174725140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3494501, 6989002, 13978004, 17472505, 27956008, 34945010, 69890020, 139780040]

約数ペア:

[(1, 139780040), (2, 69890020), (4, 34945010), (5, 27956008), (8, 17472505), (10, 13978004), (20, 6989002), (40, 3494501)]