21122881

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:432

約数の個数: 16

約数和(自身を含む): 23482368

約数和(自身を除く): 2359487

約数列:

[1, 13, 47, 181, 191, 611, 2353, 2483, 8507, 8977, 34571, 110591, 116701, 449423, 1624837, 21122881]

約数ペア:

[(1, 21122881), (13, 1624837), (47, 449423), (181, 116701), (191, 110591), (611, 34571), (2353, 8977), (2483, 8507)]