20909888

素因数分解:

$2^6\times {\mathrm{157}}^1\times {\mathrm{2081}}^1$

素因数の和:2250

約数の個数: 28

約数和(自身を含む): 41777412

約数和(自身を除く): 20867524

約数列:

[1, 2, 4, 8, 16, 32, 64, 157, 314, 628, 1256, 2081, 2512, 4162, 5024, 8324, 10048, 16648, 33296, 66592, 133184, 326717, 653434, 1306868, 2613736, 5227472, 10454944, 20909888]

約数ペア:

[(1, 20909888), (2, 10454944), (4, 5227472), (8, 2613736), (16, 1306868), (32, 653434), (64, 326717), (157, 133184), (314, 66592), (628, 33296), (1256, 16648), (2081, 10048), (2512, 8324), (4162, 5024)]