20781772

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{3719}}^1$

素因数の和:3861

約数の個数: 24

約数和(自身を含む): 39997440

約数和(自身を除く): 19215668

約数列:

[1, 2, 4, 11, 22, 44, 127, 254, 508, 1397, 2794, 3719, 5588, 7438, 14876, 40909, 81818, 163636, 472313, 944626, 1889252, 5195443, 10390886, 20781772]

約数ペア:

[(1, 20781772), (2, 10390886), (4, 5195443), (11, 1889252), (22, 944626), (44, 472313), (127, 163636), (254, 81818), (508, 40909), (1397, 14876), (2794, 7438), (3719, 5588)]