31415931

素因数分解:

$3^4\times {\mathrm{199}}^1\times {\mathrm{1949}}^1$

素因数の和:2160

約数の個数: 20

約数和(自身を含む): 47190000

約数和(自身を除く): 15774069

約数列:

[1, 3, 9, 27, 81, 199, 597, 1791, 1949, 5373, 5847, 16119, 17541, 52623, 157869, 387851, 1163553, 3490659, 10471977, 31415931]

約数ペア:

[(1, 31415931), (3, 10471977), (9, 3490659), (27, 1163553), (81, 387851), (199, 157869), (597, 52623), (1791, 17541), (1949, 16119), (5373, 5847)]