19183780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12457}}^1$

素因数の和:12484

約数の個数: 48

約数和(自身を含む): 50230656

約数和(自身を除く): 31046876

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12457, 24914, 49828, 62285, 87199, 124570, 137027, 174398, 249140, 274054, 348796, 435995, 548108, 685135, 871990, 959189, 1370270, 1743980, 1918378, 2740540, 3836756, 4795945, 9591890, 19183780]

約数ペア:

[(1, 19183780), (2, 9591890), (4, 4795945), (5, 3836756), (7, 2740540), (10, 1918378), (11, 1743980), (14, 1370270), (20, 959189), (22, 871990), (28, 685135), (35, 548108), (44, 435995), (55, 348796), (70, 274054), (77, 249140), (110, 174398), (140, 137027), (154, 124570), (220, 87199), (308, 62285), (385, 49828), (770, 24914), (1540, 12457)]