20581456

素因数分解:

$2^4\times 7^1\times {\mathrm{183763}}^1$

素因数の和:183778

約数の個数: 20

約数和(自身を含む): 45573472

約数和(自身を除く): 24992016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 183763, 367526, 735052, 1286341, 1470104, 2572682, 2940208, 5145364, 10290728, 20581456]

約数ペア:

[(1, 20581456), (2, 10290728), (4, 5145364), (7, 2940208), (8, 2572682), (14, 1470104), (16, 1286341), (28, 735052), (56, 367526), (112, 183763)]