21187492

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{719}}^1$

素因数の和:915

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 16914908

約数列:

[1, 2, 4, 53, 106, 139, 212, 278, 556, 719, 1438, 2876, 7367, 14734, 29468, 38107, 76214, 99941, 152428, 199882, 399764, 5296873, 10593746, 21187492]

約数ペア:

[(1, 21187492), (2, 10593746), (4, 5296873), (53, 399764), (106, 199882), (139, 152428), (212, 99941), (278, 76214), (556, 38107), (719, 29468), (1438, 14734), (2876, 7367)]