213804938180

素因数分解:

$2^2\times 5^1\times {\mathrm{10690246909}}^1$

素因数の和:10690246918

約数の個数: 12

約数和(自身を含む): 448990370220

約数和(自身を除く): 235185432040

約数列:

[1, 2, 4, 5, 10, 20, 10690246909, 21380493818, 42760987636, 53451234545, 106902469090, 213804938180]

約数ペア:

[(1, 213804938180), (2, 106902469090), (4, 53451234545), (5, 42760987636), (10, 21380493818), (20, 10690246909)]