21146427

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3677}}^1$

素因数の和:3760

約数の個数: 20

約数和(自身を含む): 32042736

約数和(自身を除く): 10896309

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3677, 5751, 11031, 33093, 99279, 261067, 297837, 783201, 2349603, 7048809, 21146427]

約数ペア:

[(1, 21146427), (3, 7048809), (9, 2349603), (27, 783201), (71, 297837), (81, 261067), (213, 99279), (639, 33093), (1917, 11031), (3677, 5751)]