19963640

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3643}}^1$

素因数の和:3791

約数の個数: 32

約数和(自身を含む): 45258480

約数和(自身を除く): 25294840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3643, 5480, 7286, 14572, 18215, 29144, 36430, 72860, 145720, 499091, 998182, 1996364, 2495455, 3992728, 4990910, 9981820, 19963640]

約数ペア:

[(1, 19963640), (2, 9981820), (4, 4990910), (5, 3992728), (8, 2495455), (10, 1996364), (20, 998182), (40, 499091), (137, 145720), (274, 72860), (548, 36430), (685, 29144), (1096, 18215), (1370, 14572), (2740, 7286), (3643, 5480)]