20970819

素因数分解:

$3^4\times {\mathrm{199}}^1\times {\mathrm{1301}}^1$

素因数の和:1512

約数の個数: 20

約数和(自身を含む): 31508400

約数和(自身を除く): 10537581

約数列:

[1, 3, 9, 27, 81, 199, 597, 1301, 1791, 3903, 5373, 11709, 16119, 35127, 105381, 258899, 776697, 2330091, 6990273, 20970819]

約数ペア:

[(1, 20970819), (3, 6990273), (9, 2330091), (27, 776697), (81, 258899), (199, 105381), (597, 35127), (1301, 16119), (1791, 11709), (3903, 5373)]