9889990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89909}}^1$

素因数の和:89927

約数の個数: 16

約数和(自身を含む): 19420560

約数和(自身を除く): 9530570

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 89909, 179818, 449545, 899090, 988999, 1977998, 4944995, 9889990]

約数ペア:

[(1, 9889990), (2, 4944995), (5, 1977998), (10, 988999), (11, 899090), (22, 449545), (55, 179818), (110, 89909)]