18820778

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:749

約数の個数: 16

約数和(自身を含む): 28706496

約数和(自身を除く): 9885718

約数列:

[1, 2, 103, 206, 211, 422, 433, 866, 21733, 43466, 44599, 89198, 91363, 182726, 9410389, 18820778]

約数ペア:

[(1, 18820778), (2, 9410389), (103, 182726), (206, 91363), (211, 89198), (422, 44599), (433, 43466), (866, 21733)]