20928740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149491}}^1$

素因数の和:149507

約数の個数: 24

約数和(自身を含む): 50229312

約数和(自身を除く): 29300572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149491, 298982, 597964, 747455, 1046437, 1494910, 2092874, 2989820, 4185748, 5232185, 10464370, 20928740]

約数ペア:

[(1, 20928740), (2, 10464370), (4, 5232185), (5, 4185748), (7, 2989820), (10, 2092874), (14, 1494910), (20, 1046437), (28, 747455), (35, 597964), (70, 298982), (140, 149491)]