18987327

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3001}}^1$

素因数の和:3063

約数の個数: 24

約数和(自身を含む): 29659760

約数和(自身を除く): 10672433

約数列:

[1, 3, 9, 19, 37, 57, 111, 171, 333, 703, 2109, 3001, 6327, 9003, 27009, 57019, 111037, 171057, 333111, 513171, 999333, 2109703, 6329109, 18987327]

約数ペア:

[(1, 18987327), (3, 6329109), (9, 2109703), (19, 999333), (37, 513171), (57, 333111), (111, 171057), (171, 111037), (333, 57019), (703, 27009), (2109, 9003), (3001, 6327)]