21022210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{857}}^1$

素因数の和:1098

約数の個数: 32

約数和(自身を含む): 41513472

約数和(自身を除く): 20491262

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 223, 446, 857, 1115, 1714, 2230, 2453, 4285, 4906, 8570, 9427, 12265, 18854, 24530, 47135, 94270, 191111, 382222, 955555, 1911110, 2102221, 4204442, 10511105, 21022210]

約数ペア:

[(1, 21022210), (2, 10511105), (5, 4204442), (10, 2102221), (11, 1911110), (22, 955555), (55, 382222), (110, 191111), (223, 94270), (446, 47135), (857, 24530), (1115, 18854), (1714, 12265), (2230, 9427), (2453, 8570), (4285, 4906)]