51720697

素因数分解:

$7^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1\times {\mathrm{347}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 60134400

約数和(自身を除く): 8413703

約数列:

[1, 7, 107, 199, 347, 749, 1393, 2429, 21293, 37129, 69053, 149051, 259903, 483371, 7388671, 51720697]

約数ペア:

[(1, 51720697), (7, 7388671), (107, 483371), (199, 259903), (347, 149051), (749, 69053), (1393, 37129), (2429, 21293)]