20007721245

素因数分解:

$3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2061589}}^1$

素因数の和:2062244

約数の個数: 16

約数和(自身を含む): 32061847680

約数和(自身を除く): 12054126435

約数列:

[1, 3, 5, 15, 647, 1941, 3235, 9705, 2061589, 6184767, 10307945, 30923835, 1333848083, 4001544249, 6669240415, 20007721245]

約数ペア:

[(1, 20007721245), (3, 6669240415), (5, 4001544249), (15, 1333848083), (647, 30923835), (1941, 10307945), (3235, 6184767), (9705, 2061589)]