408740

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 870912

約数和(自身を除く): 462172

約数列:

[1, 2, 4, 5, 10, 20, 107, 191, 214, 382, 428, 535, 764, 955, 1070, 1910, 2140, 3820, 20437, 40874, 81748, 102185, 204370, 408740]

約数ペア:

[(1, 408740), (2, 204370), (4, 102185), (5, 81748), (10, 40874), (20, 20437), (107, 3820), (191, 2140), (214, 1910), (382, 1070), (428, 955), (535, 764)]