21905619

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{3613}}^1$

素因数の和:3706

約数の個数: 16

約数和(自身を含む): 30531072

約数和(自身を除く): 8625453

約数列:

[1, 3, 43, 47, 129, 141, 2021, 3613, 6063, 10839, 155359, 169811, 466077, 509433, 7301873, 21905619]

約数ペア:

[(1, 21905619), (3, 7301873), (43, 509433), (47, 466077), (129, 169811), (141, 155359), (2021, 10839), (3613, 6063)]