28004275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{433}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 37671200

約数和(自身を除く): 9666925

約数列:

[1, 5, 13, 25, 65, 199, 325, 433, 995, 2165, 2587, 4975, 5629, 10825, 12935, 28145, 64675, 86167, 140725, 430835, 1120171, 2154175, 5600855, 28004275]

約数ペア:

[(1, 28004275), (5, 5600855), (13, 2154175), (25, 1120171), (65, 430835), (199, 140725), (325, 86167), (433, 64675), (995, 28145), (2165, 12935), (2587, 10825), (4975, 5629)]