21269636

素因数分解:

$2^2\times {\mathrm{409}}^1\times {\mathrm{13001}}^1$

素因数の和:13414

約数の個数: 12

約数和(自身を含む): 37315740

約数和(自身を除く): 16046104

約数列:

[1, 2, 4, 409, 818, 1636, 13001, 26002, 52004, 5317409, 10634818, 21269636]

約数ペア:

[(1, 21269636), (2, 10634818), (4, 5317409), (409, 52004), (818, 26002), (1636, 13001)]