20391484

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3779}}^1$

素因数の和:3873

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 17710916

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 3779, 5396, 7558, 15116, 71801, 143602, 268309, 287204, 536618, 1073236, 5097871, 10195742, 20391484]

約数ペア:

[(1, 20391484), (2, 10195742), (4, 5097871), (19, 1073236), (38, 536618), (71, 287204), (76, 268309), (142, 143602), (284, 71801), (1349, 15116), (2698, 7558), (3779, 5396)]