27984321

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4423}}^1$

素因数の和:4485

約数の個数: 24

約数和(自身を含む): 43709120

約数和(自身を除く): 15724799

約数列:

[1, 3, 9, 19, 37, 57, 111, 171, 333, 703, 2109, 4423, 6327, 13269, 39807, 84037, 163651, 252111, 490953, 756333, 1472859, 3109369, 9328107, 27984321]

約数ペア:

[(1, 27984321), (3, 9328107), (9, 3109369), (19, 1472859), (37, 756333), (57, 490953), (111, 252111), (171, 163651), (333, 84037), (703, 39807), (2109, 13269), (4423, 6327)]