18971784

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{20269}}^1$

素因数の和:20294

約数の個数: 48

約数和(自身を含む): 55337100

約数和(自身を除く): 36365316

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 20269, 40538, 60807, 81076, 121614, 162152, 182421, 243228, 263497, 364842, 486456, 526994, 729684, 790491, 1053988, 1459368, 1580982, 2107976, 2371473, 3161964, 4742946, 6323928, 9485892, 18971784]

約数ペア:

[(1, 18971784), (2, 9485892), (3, 6323928), (4, 4742946), (6, 3161964), (8, 2371473), (9, 2107976), (12, 1580982), (13, 1459368), (18, 1053988), (24, 790491), (26, 729684), (36, 526994), (39, 486456), (52, 364842), (72, 263497), (78, 243228), (104, 182421), (117, 162152), (156, 121614), (234, 81076), (312, 60807), (468, 40538), (936, 20269)]