256804525

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{1259}}^1$

素因数の和:1509

約数の個数: 24

約数和(自身を含む): 328104000

約数和(自身を除く): 71299475

約数列:

[1, 5, 25, 41, 199, 205, 995, 1025, 1259, 4975, 6295, 8159, 31475, 40795, 51619, 203975, 250541, 258095, 1252705, 1290475, 6263525, 10272181, 51360905, 256804525]

約数ペア:

[(1, 256804525), (5, 51360905), (25, 10272181), (41, 6263525), (199, 1290475), (205, 1252705), (995, 258095), (1025, 250541), (1259, 203975), (4975, 51619), (6295, 40795), (8159, 31475)]