19901523

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{4373}}^1$

素因数の和:4454

約数の個数: 16

約数和(自身を含む): 27923616

約数和(自身を除く): 8022093

約数列:

[1, 3, 37, 41, 111, 123, 1517, 4373, 4551, 13119, 161801, 179293, 485403, 537879, 6633841, 19901523]

約数ペア:

[(1, 19901523), (3, 6633841), (37, 537879), (41, 485403), (111, 179293), (123, 161801), (1517, 13119), (4373, 4551)]