128195920

素因数分解:

$2^4\times 5^1\times {\mathrm{911}}^1\times {\mathrm{1759}}^1$

素因数の和:2683

約数の個数: 40

約数和(自身を含む): 298552320

約数和(自身を除く): 170356400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 911, 1759, 1822, 3518, 3644, 4555, 7036, 7288, 8795, 9110, 14072, 14576, 17590, 18220, 28144, 35180, 36440, 70360, 72880, 140720, 1602449, 3204898, 6409796, 8012245, 12819592, 16024490, 25639184, 32048980, 64097960, 128195920]

約数ペア:

[(1, 128195920), (2, 64097960), (4, 32048980), (5, 25639184), (8, 16024490), (10, 12819592), (16, 8012245), (20, 6409796), (40, 3204898), (80, 1602449), (911, 140720), (1759, 72880), (1822, 70360), (3518, 36440), (3644, 35180), (4555, 28144), (7036, 18220), (7288, 17590), (8795, 14576), (9110, 14072)]