21194778

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4523}}^1$

素因数の和:4610

約数の個数: 32

約数和(自身を含む): 46904832

約数和(自身を除く): 25710054

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 71, 142, 213, 426, 781, 1562, 2343, 4523, 4686, 9046, 13569, 27138, 49753, 99506, 149259, 298518, 321133, 642266, 963399, 1926798, 3532463, 7064926, 10597389, 21194778]

約数ペア:

[(1, 21194778), (2, 10597389), (3, 7064926), (6, 3532463), (11, 1926798), (22, 963399), (33, 642266), (66, 321133), (71, 298518), (142, 149259), (213, 99506), (426, 49753), (781, 27138), (1562, 13569), (2343, 9046), (4523, 4686)]