40321687

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{647}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 47900160

約数和(自身を除く): 7578473

約数列:

[1, 7, 29, 203, 307, 647, 2149, 4529, 8903, 18763, 62321, 131341, 198629, 1390403, 5760241, 40321687]

約数ペア:

[(1, 40321687), (7, 5760241), (29, 1390403), (203, 198629), (307, 131341), (647, 62321), (2149, 18763), (4529, 8903)]