18997880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43177}}^1$

素因数の和:43199

約数の個数: 32

約数和(自身を含む): 46632240

約数和(自身を除く): 27634360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 43177, 86354, 172708, 215885, 345416, 431770, 474947, 863540, 949894, 1727080, 1899788, 2374735, 3799576, 4749470, 9498940, 18997880]

約数ペア:

[(1, 18997880), (2, 9498940), (4, 4749470), (5, 3799576), (8, 2374735), (10, 1899788), (11, 1727080), (20, 949894), (22, 863540), (40, 474947), (44, 431770), (55, 345416), (88, 215885), (110, 172708), (220, 86354), (440, 43177)]