21557902

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1\times {\mathrm{919}}^1$

素因数の和:1275

約数の個数: 16

約数和(自身を含む): 33351840

約数和(自身を除く): 11793938

約数列:

[1, 2, 37, 74, 317, 634, 919, 1838, 11729, 23458, 34003, 68006, 291323, 582646, 10778951, 21557902]

約数ペア:

[(1, 21557902), (2, 10778951), (37, 582646), (74, 291323), (317, 68006), (634, 34003), (919, 23458), (1838, 11729)]