18988942

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71387}}^1$

素因数の和:71415

約数の個数: 16

約数和(自身を含む): 34266240

約数和(自身を除く): 15277298

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 71387, 142774, 499709, 999418, 1356353, 2712706, 9494471, 18988942]

約数ペア:

[(1, 18988942), (2, 9494471), (7, 2712706), (14, 1356353), (19, 999418), (38, 499709), (133, 142774), (266, 71387)]