257560

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:195

約数の個数: 32

約数和(自身を含む): 596160

約数和(自身を除く): 338600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 137, 188, 235, 274, 376, 470, 548, 685, 940, 1096, 1370, 1880, 2740, 5480, 6439, 12878, 25756, 32195, 51512, 64390, 128780, 257560]

約数ペア:

[(1, 257560), (2, 128780), (4, 64390), (5, 51512), (8, 32195), (10, 25756), (20, 12878), (40, 6439), (47, 5480), (94, 2740), (137, 1880), (188, 1370), (235, 1096), (274, 940), (376, 685), (470, 548)]