81000780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{192859}}^1$

素因数の和:192878

約数の個数: 48

約数和(自身を含む): 259203840

約数和(自身を除く): 178203060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 192859, 385718, 578577, 771436, 964295, 1157154, 1350013, 1928590, 2314308, 2700026, 2892885, 3857180, 4050039, 5400052, 5785770, 6750065, 8100078, 11571540, 13500130, 16200156, 20250195, 27000260, 40500390, 81000780]

約数ペア:

[(1, 81000780), (2, 40500390), (3, 27000260), (4, 20250195), (5, 16200156), (6, 13500130), (7, 11571540), (10, 8100078), (12, 6750065), (14, 5785770), (15, 5400052), (20, 4050039), (21, 3857180), (28, 2892885), (30, 2700026), (35, 2314308), (42, 1928590), (60, 1350013), (70, 1157154), (84, 964295), (105, 771436), (140, 578577), (210, 385718), (420, 192859)]