7920780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{18859}}^1$

素因数の和:18878

約数の個数: 48

約数和(自身を含む): 25347840

約数和(自身を除く): 17427060

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, 18859, 37718, 56577, 75436, 94295, 113154, 132013, 188590, 226308, 264026, 282885, 377180, 396039, 528052, 565770, 660065, 792078, 1131540, 1320130, 1584156, 1980195, 2640260, 3960390, 7920780]

約数ペア:

[(1, 7920780), (2, 3960390), (3, 2640260), (4, 1980195), (5, 1584156), (6, 1320130), (7, 1131540), (10, 792078), (12, 660065), (14, 565770), (15, 528052), (20, 396039), (21, 377180), (28, 282885), (30, 264026), (35, 226308), (42, 188590), (60, 132013), (70, 113154), (84, 94295), (105, 75436), (140, 56577), (210, 37718), (420, 18859)]