2189860

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{491}}^1$

素因数の和:723

約数の個数: 24

約数和(自身を含む): 4628736

約数和(自身を除く): 2438876

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 491, 892, 982, 1115, 1964, 2230, 2455, 4460, 4910, 9820, 109493, 218986, 437972, 547465, 1094930, 2189860]

約数ペア:

[(1, 2189860), (2, 1094930), (4, 547465), (5, 437972), (10, 218986), (20, 109493), (223, 9820), (446, 4910), (491, 4460), (892, 2455), (982, 2230), (1115, 1964)]