256130478

素因数分解:

$2^1\times 3^3\times {\mathrm{647}}^1\times {\mathrm{7331}}^1$

素因数の和:7989

約数の個数: 32

約数和(自身を含む): 570136320

約数和(自身を除く): 314005842

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 647, 1294, 1941, 3882, 5823, 7331, 11646, 14662, 17469, 21993, 34938, 43986, 65979, 131958, 197937, 395874, 4743157, 9486314, 14229471, 28458942, 42688413, 85376826, 128065239, 256130478]

約数ペア:

[(1, 256130478), (2, 128065239), (3, 85376826), (6, 42688413), (9, 28458942), (18, 14229471), (27, 9486314), (54, 4743157), (647, 395874), (1294, 197937), (1941, 131958), (3882, 65979), (5823, 43986), (7331, 34938), (11646, 21993), (14662, 17469)]