20561954

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{63857}}^1$

素因数の和:63889

約数の個数: 16

約数和(自身を含む): 36782208

約数和(自身を除く): 16220254

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 63857, 127714, 446999, 893998, 1468711, 2937422, 10280977, 20561954]

約数ペア:

[(1, 20561954), (2, 10280977), (7, 2937422), (14, 1468711), (23, 893998), (46, 446999), (161, 127714), (322, 63857)]