20881431

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{859}}^1$

素因数の和:975

約数の個数: 24

約数和(自身を含む): 31438160

約数和(自身を除く): 10556729

約数列:

[1, 3, 9, 37, 73, 111, 219, 333, 657, 859, 2577, 2701, 7731, 8103, 24309, 31783, 62707, 95349, 188121, 286047, 564363, 2320159, 6960477, 20881431]

約数ペア:

[(1, 20881431), (3, 6960477), (9, 2320159), (37, 564363), (73, 286047), (111, 188121), (219, 95349), (333, 62707), (657, 31783), (859, 24309), (2577, 8103), (2701, 7731)]