21119193

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63421}}^1$

素因数の和:63464

約数の個数: 12

約数和(自身を含む): 31330468

約数和(自身を除く): 10211275

約数列:

[1, 3, 9, 37, 111, 333, 63421, 190263, 570789, 2346577, 7039731, 21119193]

約数ペア:

[(1, 21119193), (3, 7039731), (9, 2346577), (37, 570789), (111, 190263), (333, 63421)]