19886834

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{2221}}^1$

素因数の和:2282

約数の個数: 24

約数和(自身を含む): 33689964

約数和(自身を除く): 13803130

約数列:

[1, 2, 11, 22, 37, 74, 121, 242, 407, 814, 2221, 4442, 4477, 8954, 24431, 48862, 82177, 164354, 268741, 537482, 903947, 1807894, 9943417, 19886834]

約数ペア:

[(1, 19886834), (2, 9943417), (11, 1807894), (22, 903947), (37, 537482), (74, 268741), (121, 164354), (242, 82177), (407, 48862), (814, 24431), (2221, 8954), (4442, 4477)]