257891518

素因数分解:

$2^1\times {\mathrm{197}}^1\times {\mathrm{383}}^1\times {\mathrm{1709}}^1$

素因数の和:2291

約数の個数: 16

約数和(自身を含む): 390044160

約数和(自身を除く): 132152642

約数列:

[1, 2, 197, 383, 394, 766, 1709, 3418, 75451, 150902, 336673, 654547, 673346, 1309094, 128945759, 257891518]

約数ペア:

[(1, 257891518), (2, 128945759), (197, 1309094), (383, 673346), (394, 654547), (766, 336673), (1709, 150902), (3418, 75451)]