21069884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{478861}}^1$

素因数の和:478876

約数の個数: 12

約数和(自身を含む): 40224408

約数和(自身を除く): 19154524

約数列:

[1, 2, 4, 11, 22, 44, 478861, 957722, 1915444, 5267471, 10534942, 21069884]

約数ペア:

[(1, 21069884), (2, 10534942), (4, 5267471), (11, 1915444), (22, 957722), (44, 478861)]