8217391

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1237}}^1$

素因数の和:1330

約数の個数: 16

約数和(自身を含む): 10260544

約数和(自身を除く): 2043153

約数列:

[1, 7, 13, 73, 91, 511, 949, 1237, 6643, 8659, 16081, 90301, 112567, 632107, 1173913, 8217391]

約数ペア:

[(1, 8217391), (7, 1173913), (13, 632107), (73, 112567), (91, 90301), (511, 16081), (949, 8659), (1237, 6643)]