2120991

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{521}}^1$

素因数の和:606

約数の個数: 16

約数和(自身を含む): 3006720

約数和(自身を除く): 885729

約数列:

[1, 3, 23, 59, 69, 177, 521, 1357, 1563, 4071, 11983, 30739, 35949, 92217, 706997, 2120991]

約数ペア:

[(1, 2120991), (3, 706997), (23, 92217), (59, 35949), (69, 30739), (177, 11983), (521, 4071), (1357, 1563)]