256117775

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{249871}}^1$

素因数の和:249922

約数の個数: 12

約数和(自身を含む): 325333344

約数和(自身を除く): 69215569

約数列:

[1, 5, 25, 41, 205, 1025, 249871, 1249355, 6246775, 10244711, 51223555, 256117775]

約数ペア:

[(1, 256117775), (5, 51223555), (25, 10244711), (41, 6246775), (205, 1249355), (1025, 249871)]