21182555

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{349}}^1$

素因数の和:614

約数の個数: 16

約数和(自身を含む): 26040000

約数和(自身を除く): 4857445

約数列:

[1, 5, 61, 199, 305, 349, 995, 1745, 12139, 21289, 60695, 69451, 106445, 347255, 4236511, 21182555]

約数ペア:

[(1, 21182555), (5, 4236511), (61, 347255), (199, 106445), (305, 69451), (349, 60695), (995, 21289), (1745, 12139)]