81680816

素因数分解:

$2^4\times 7^1\times {\mathrm{729293}}^1$

素因数の和:729308

約数の個数: 20

約数和(自身を含む): 180864912

約数和(自身を除く): 99184096

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 729293, 1458586, 2917172, 5105051, 5834344, 10210102, 11668688, 20420204, 40840408, 81680816]

約数ペア:

[(1, 81680816), (2, 40840408), (4, 20420204), (7, 11668688), (8, 10210102), (14, 5834344), (16, 5105051), (28, 2917172), (56, 1458586), (112, 729293)]