21230990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193009}}^1$

素因数の和:193027

約数の個数: 16

約数和(自身を含む): 41690160

約数和(自身を除く): 20459170

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193009, 386018, 965045, 1930090, 2123099, 4246198, 10615495, 21230990]

約数ペア:

[(1, 21230990), (2, 10615495), (5, 4246198), (10, 2123099), (11, 1930090), (22, 965045), (55, 386018), (110, 193009)]