20017564

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 22560356

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 191, 197, 266, 382, 394, 532, 764, 788, 1337, 1379, 2674, 2758, 3629, 3743, 5348, 5516, 7258, 7486, 14516, 14972, 25403, 26201, 37627, 50806, 52402, 75254, 101612, 104804, 150508, 263389, 526778, 714913, 1053556, 1429826, 2859652, 5004391, 10008782, 20017564]

約数ペア:

[(1, 20017564), (2, 10008782), (4, 5004391), (7, 2859652), (14, 1429826), (19, 1053556), (28, 714913), (38, 526778), (76, 263389), (133, 150508), (191, 104804), (197, 101612), (266, 75254), (382, 52402), (394, 50806), (532, 37627), (764, 26201), (788, 25403), (1337, 14972), (1379, 14516), (2674, 7486), (2758, 7258), (3629, 5516), (3743, 5348)]