18887687

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:375

約数の個数: 24

約数和(自身を含む): 23940000

約数和(自身を除く): 5052313

約数列:

[1, 7, 13, 49, 91, 149, 199, 637, 1043, 1393, 1937, 2587, 7301, 9751, 13559, 18109, 29651, 94913, 126763, 207557, 385463, 1452899, 2698241, 18887687]

約数ペア:

[(1, 18887687), (7, 2698241), (13, 1452899), (49, 385463), (91, 207557), (149, 126763), (199, 94913), (637, 29651), (1043, 18109), (1393, 13559), (1937, 9751), (2587, 7301)]