2557251

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:384

約数の個数: 20

約数和(自身を含む): 3865224

約数和(自身を除く): 1307973

約数列:

[1, 3, 9, 27, 81, 131, 241, 393, 723, 1179, 2169, 3537, 6507, 10611, 19521, 31571, 94713, 284139, 852417, 2557251]

約数ペア:

[(1, 2557251), (3, 852417), (9, 284139), (27, 94713), (81, 31571), (131, 19521), (241, 10611), (393, 6507), (723, 3537), (1179, 2169)]