9821780

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1237}}^1$

素因数の和:1643

約数の個数: 24

約数和(自身を含む): 20694408

約数和(自身を除く): 10872628

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1237, 1588, 1985, 2474, 3970, 4948, 6185, 7940, 12370, 24740, 491089, 982178, 1964356, 2455445, 4910890, 9821780]

約数ペア:

[(1, 9821780), (2, 4910890), (4, 2455445), (5, 1964356), (10, 982178), (20, 491089), (397, 24740), (794, 12370), (1237, 7940), (1588, 6185), (1985, 4948), (2474, 3970)]