18883988780

素因数分解:

$2^2\times 5^1\times {\mathrm{2777}}^1\times {\mathrm{340007}}^1$

素因数の和:342793

約数の個数: 24

約数和(自身を含む): 39670773408

約数和(自身を除く): 20786784628

約数列:

[1, 2, 4, 5, 10, 20, 2777, 5554, 11108, 13885, 27770, 55540, 340007, 680014, 1360028, 1700035, 3400070, 6800140, 944199439, 1888398878, 3776797756, 4720997195, 9441994390, 18883988780]

約数ペア:

[(1, 18883988780), (2, 9441994390), (4, 4720997195), (5, 3776797756), (10, 1888398878), (20, 944199439), (2777, 6800140), (5554, 3400070), (11108, 1700035), (13885, 1360028), (27770, 680014), (55540, 340007)]