16420563

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{5479}}^1$

素因数の和:5528

約数の個数: 20

約数和(自身を含む): 25197040

約数和(自身を除く): 8776477

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 5479, 16437, 49311, 147933, 202723, 443799, 608169, 1824507, 5473521, 16420563]

約数ペア:

[(1, 16420563), (3, 5473521), (9, 1824507), (27, 608169), (37, 443799), (81, 202723), (111, 147933), (333, 49311), (999, 16437), (2997, 5479)]