8720360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19819}}^1$

素因数の和:19841

約数の個数: 32

約数和(自身を含む): 21405600

約数和(自身を除く): 12685240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 19819, 39638, 79276, 99095, 158552, 198190, 218009, 396380, 436018, 792760, 872036, 1090045, 1744072, 2180090, 4360180, 8720360]

約数ペア:

[(1, 8720360), (2, 4360180), (4, 2180090), (5, 1744072), (8, 1090045), (10, 872036), (11, 792760), (20, 436018), (22, 396380), (40, 218009), (44, 198190), (55, 158552), (88, 99095), (110, 79276), (220, 39638), (440, 19819)]