21003884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{477361}}^1$

素因数の和:477376

約数の個数: 12

約数和(自身を含む): 40098408

約数和(自身を除く): 19094524

約数列:

[1, 2, 4, 11, 22, 44, 477361, 954722, 1909444, 5250971, 10501942, 21003884]

約数ペア:

[(1, 21003884), (2, 10501942), (4, 5250971), (11, 1909444), (22, 954722), (44, 477361)]