13491205

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 20160000

約数和(自身を除く): 6668795

約数列:

[1, 5, 7, 13, 35, 65, 91, 149, 199, 455, 745, 995, 1043, 1393, 1937, 2587, 5215, 6965, 9685, 12935, 13559, 18109, 29651, 67795, 90545, 148255, 207557, 385463, 1037785, 1927315, 2698241, 13491205]

約数ペア:

[(1, 13491205), (5, 2698241), (7, 1927315), (13, 1037785), (35, 385463), (65, 207557), (91, 148255), (149, 90545), (199, 67795), (455, 29651), (745, 18109), (995, 13559), (1043, 12935), (1393, 9685), (1937, 6965), (2587, 5215)]