19886680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45197}}^1$

素因数の和:45219

約数の個数: 32

約数和(自身を含む): 48813840

約数和(自身を除く): 28927160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45197, 90394, 180788, 225985, 361576, 451970, 497167, 903940, 994334, 1807880, 1988668, 2485835, 3977336, 4971670, 9943340, 19886680]

約数ペア:

[(1, 19886680), (2, 9943340), (4, 4971670), (5, 3977336), (8, 2485835), (10, 1988668), (11, 1807880), (20, 994334), (22, 903940), (40, 497167), (44, 451970), (55, 361576), (88, 225985), (110, 180788), (220, 90394), (440, 45197)]