20320688

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9137}}^1$

素因数の和:9284

約数の個数: 20

約数和(自身を含む): 39658920

約数和(自身を除く): 19338232

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9137, 18274, 36548, 73096, 146192, 1270043, 2540086, 5080172, 10160344, 20320688]

約数ペア:

[(1, 20320688), (2, 10160344), (4, 5080172), (8, 2540086), (16, 1270043), (139, 146192), (278, 73096), (556, 36548), (1112, 18274), (2224, 9137)]