19885525

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{433}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 27123264

約数和(自身を除く): 7237739

約数列:

[1, 5, 11, 25, 55, 167, 275, 433, 835, 1837, 2165, 4175, 4763, 9185, 10825, 23815, 45925, 72311, 119075, 361555, 795421, 1807775, 3977105, 19885525]

約数ペア:

[(1, 19885525), (5, 3977105), (11, 1807775), (25, 795421), (55, 361555), (167, 119075), (275, 72311), (433, 45925), (835, 23815), (1837, 10825), (2165, 9185), (4175, 4763)]