19669276

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{40639}}^1$

素因数の和:40665

約数の個数: 18

約数和(自身を含む): 37835840

約数和(自身を除く): 18166564

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 40639, 81278, 162556, 447029, 894058, 1788116, 4917319, 9834638, 19669276]

約数ペア:

[(1, 19669276), (2, 9834638), (4, 4917319), (11, 1788116), (22, 894058), (44, 447029), (121, 162556), (242, 81278), (484, 40639)]