21253666

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79901}}^1$

素因数の和:79929

約数の個数: 16

約数和(自身を含む): 38352960

約数和(自身を除く): 17099294

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 79901, 159802, 559307, 1118614, 1518119, 3036238, 10626833, 21253666]

約数ペア:

[(1, 21253666), (2, 10626833), (7, 3036238), (14, 1518119), (19, 1118614), (38, 559307), (133, 159802), (266, 79901)]