1981564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{719}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 3810240

約数和(自身を除く): 1828676

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 719, 1378, 1438, 2756, 2876, 9347, 18694, 37388, 38107, 76214, 152428, 495391, 990782, 1981564]

約数ペア:

[(1, 1981564), (2, 990782), (4, 495391), (13, 152428), (26, 76214), (52, 38107), (53, 37388), (106, 18694), (212, 9347), (689, 2876), (719, 2756), (1378, 1438)]