28257285040

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{545929}}^1$

素因数の和:546589

約数の個数: 40

約数和(自身を含む): 65799851040

約数和(自身を除く): 37542566000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 25880, 51760, 545929, 1091858, 2183716, 2729645, 4367432, 5459290, 8734864, 10918580, 21837160, 43674320, 353216063, 706432126, 1412864252, 1766080315, 2825728504, 3532160630, 5651457008, 7064321260, 14128642520, 28257285040]

約数ペア:

[(1, 28257285040), (2, 14128642520), (4, 7064321260), (5, 5651457008), (8, 3532160630), (10, 2825728504), (16, 1766080315), (20, 1412864252), (40, 706432126), (80, 353216063), (647, 43674320), (1294, 21837160), (2588, 10918580), (3235, 8734864), (5176, 5459290), (6470, 4367432), (10352, 2729645), (12940, 2183716), (25880, 1091858), (51760, 545929)]