19855880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45127}}^1$

素因数の和:45149

約数の個数: 32

約数和(自身を含む): 48738240

約数和(自身を除く): 28882360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45127, 90254, 180508, 225635, 361016, 451270, 496397, 902540, 992794, 1805080, 1985588, 2481985, 3971176, 4963970, 9927940, 19855880]

約数ペア:

[(1, 19855880), (2, 9927940), (4, 4963970), (5, 3971176), (8, 2481985), (10, 1985588), (11, 1805080), (20, 992794), (22, 902540), (40, 496397), (44, 451270), (55, 361016), (88, 225635), (110, 180508), (220, 90254), (440, 45127)]