20717255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2293}}^1$

素因数の和:2450

約数の個数: 16

約数和(自身を含む): 26977440

約数和(自身を除く): 6260185

約数列:

[1, 5, 13, 65, 139, 695, 1807, 2293, 9035, 11465, 29809, 149045, 318727, 1593635, 4143451, 20717255]

約数ペア:

[(1, 20717255), (5, 4143451), (13, 1593635), (65, 318727), (139, 149045), (695, 29809), (1807, 11465), (2293, 9035)]