140320520

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{15731}}^1$

素因数の和:15965

約数の個数: 32

約数和(自身を含む): 317157120

約数和(自身を除く): 176836600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 15731, 31462, 62924, 78655, 125848, 157310, 314620, 629240, 3508013, 7016026, 14032052, 17540065, 28064104, 35080130, 70160260, 140320520]

約数ペア:

[(1, 140320520), (2, 70160260), (4, 35080130), (5, 28064104), (8, 17540065), (10, 14032052), (20, 7016026), (40, 3508013), (223, 629240), (446, 314620), (892, 157310), (1115, 125848), (1784, 78655), (2230, 62924), (4460, 31462), (8920, 15731)]