19618989

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{881}}^1$

素因数の和:1468

約数の個数: 16

約数和(自身を含む): 28252224

約数和(自身を除く): 8633235

約数列:

[1, 3, 13, 39, 571, 881, 1713, 2643, 7423, 11453, 22269, 34359, 503051, 1509153, 6539663, 19618989]

約数ペア:

[(1, 19618989), (3, 6539663), (13, 1509153), (39, 503051), (571, 34359), (881, 22269), (1713, 11453), (2643, 7423)]