19838991

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{577}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 27031904

約数和(自身を除く): 7192913

約数列:

[1, 3, 73, 157, 219, 471, 577, 1731, 11461, 34383, 42121, 90589, 126363, 271767, 6612997, 19838991]

約数ペア:

[(1, 19838991), (3, 6612997), (73, 271767), (157, 126363), (219, 90589), (471, 42121), (577, 34383), (1731, 11461)]