256115275

素因数分解:

$5^2\times {\mathrm{13}}^3\times {\mathrm{4663}}^1$

素因数の和:4712

約数の個数: 24

約数和(自身を含む): 344109920

約数和(自身を除く): 87994645

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 2197, 4225, 4663, 10985, 23315, 54925, 60619, 116575, 303095, 788047, 1515475, 3940235, 10244611, 19701175, 51223055, 256115275]

約数ペア:

[(1, 256115275), (5, 51223055), (13, 19701175), (25, 10244611), (65, 3940235), (169, 1515475), (325, 788047), (845, 303095), (2197, 116575), (4225, 60619), (4663, 54925), (10985, 23315)]