217874855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{28499}}^1$

素因数の和:28654

約数の個数: 16

約数和(自身を含む): 287280000

約数和(自身を除く): 69405145

約数列:

[1, 5, 11, 55, 139, 695, 1529, 7645, 28499, 142495, 313489, 1567445, 3961361, 19806805, 43574971, 217874855]

約数ペア:

[(1, 217874855), (5, 43574971), (11, 19806805), (55, 3961361), (139, 1567445), (695, 313489), (1529, 142495), (7645, 28499)]