21129112

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19001}}^1$

素因数の和:19146

約数の個数: 16

約数和(自身を含む): 39904200

約数和(自身を除く): 18775088

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19001, 38002, 76004, 152008, 2641139, 5282278, 10564556, 21129112]

約数ペア:

[(1, 21129112), (2, 10564556), (4, 5282278), (8, 2641139), (139, 152008), (278, 76004), (556, 38002), (1112, 19001)]