21040756

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{478199}}^1$

素因数の和:478214

約数の個数: 12

約数和(自身を含む): 40168800

約数和(自身を除く): 19128044

約数列:

[1, 2, 4, 11, 22, 44, 478199, 956398, 1912796, 5260189, 10520378, 21040756]

約数ペア:

[(1, 21040756), (2, 10520378), (4, 5260189), (11, 1912796), (22, 956398), (44, 478199)]