289721395

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{1543}}^1$

素因数の和:1659

約数の個数: 24

約数和(自身を含む): 376359264

約数和(自身を除く): 86637869

約数列:

[1, 5, 17, 47, 85, 235, 799, 1543, 2209, 3995, 7715, 11045, 26231, 37553, 72521, 131155, 187765, 362605, 1232857, 3408487, 6164285, 17042435, 57944279, 289721395]

約数ペア:

[(1, 289721395), (5, 57944279), (17, 17042435), (47, 6164285), (85, 3408487), (235, 1232857), (799, 362605), (1543, 187765), (2209, 131155), (3995, 72521), (7715, 37553), (11045, 26231)]