19985967

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{38959}}^1$

素因数の和:38987

約数の個数: 16

約数和(自身を含む): 31168000

約数和(自身を除く): 11182033

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 38959, 116877, 350631, 740221, 1051893, 2220663, 6661989, 19985967]

約数ペア:

[(1, 19985967), (3, 6661989), (9, 2220663), (19, 1051893), (27, 740221), (57, 350631), (171, 116877), (513, 38959)]