20857986

素因数分解:

$2^1\times 3^4\times {\mathrm{199}}^1\times {\mathrm{647}}^1$

素因数の和:860

約数の個数: 40

約数和(自身を含む): 47044800

約数和(自身を除く): 26186814

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 199, 398, 597, 647, 1194, 1294, 1791, 1941, 3582, 3882, 5373, 5823, 10746, 11646, 16119, 17469, 32238, 34938, 52407, 104814, 128753, 257506, 386259, 772518, 1158777, 2317554, 3476331, 6952662, 10428993, 20857986]

約数ペア:

[(1, 20857986), (2, 10428993), (3, 6952662), (6, 3476331), (9, 2317554), (18, 1158777), (27, 772518), (54, 386259), (81, 257506), (162, 128753), (199, 104814), (398, 52407), (597, 34938), (647, 32238), (1194, 17469), (1294, 16119), (1791, 11646), (1941, 10746), (3582, 5823), (3882, 5373)]