128278360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{19919}}^1$

素因数の和:19960

約数の個数: 64

約数和(自身を含む): 344217600

約数和(自身を除く): 215939240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 19919, 39838, 79676, 99595, 139433, 159352, 199190, 278866, 398380, 458137, 557732, 697165, 796760, 916274, 1115464, 1394330, 1832548, 2290685, 2788660, 3206959, 3665096, 4581370, 5577320, 6413918, 9162740, 12827836, 16034795, 18325480, 25655672, 32069590, 64139180, 128278360]

約数ペア:

[(1, 128278360), (2, 64139180), (4, 32069590), (5, 25655672), (7, 18325480), (8, 16034795), (10, 12827836), (14, 9162740), (20, 6413918), (23, 5577320), (28, 4581370), (35, 3665096), (40, 3206959), (46, 2788660), (56, 2290685), (70, 1832548), (92, 1394330), (115, 1115464), (140, 916274), (161, 796760), (184, 697165), (230, 557732), (280, 458137), (322, 398380), (460, 278866), (644, 199190), (805, 159352), (920, 139433), (1288, 99595), (1610, 79676), (3220, 39838), (6440, 19919)]