256380813

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{115331}}^1$

素因数の和:115369

約数の個数: 24

約数和(自身を含む): 419808480

約数和(自身を除く): 163427667

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 115331, 345993, 1037979, 1499303, 2191289, 4497909, 6573867, 13493727, 19721601, 28486757, 85460271, 256380813]

約数ペア:

[(1, 256380813), (3, 85460271), (9, 28486757), (13, 19721601), (19, 13493727), (39, 6573867), (57, 4497909), (117, 2191289), (171, 1499303), (247, 1037979), (741, 345993), (2223, 115331)]