28710780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{347}}^1$

素因数の和:563

約数の個数: 96

約数和(自身を含む): 92606976

約数和(自身を除く): 63896196

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, 197, 210, 347, 394, 420, 591, 694, 788, 985, 1041, 1182, 1379, 1388, 1735, 1970, 2082, 2364, 2429, 2758, 2955, 3470, 3940, 4137, 4164, 4858, 5205, 5516, 5910, 6895, 6940, 7287, 8274, 9716, 10410, 11820, 12145, 13790, 14574, 16548, 20685, 20820, 24290, 27580, 29148, 36435, 41370, 48580, 68359, 72870, 82740, 136718, 145740, 205077, 273436, 341795, 410154, 478513, 683590, 820308, 957026, 1025385, 1367180, 1435539, 1914052, 2050770, 2392565, 2871078, 4101540, 4785130, 5742156, 7177695, 9570260, 14355390, 28710780]

約数ペア:

[(1, 28710780), (2, 14355390), (3, 9570260), (4, 7177695), (5, 5742156), (6, 4785130), (7, 4101540), (10, 2871078), (12, 2392565), (14, 2050770), (15, 1914052), (20, 1435539), (21, 1367180), (28, 1025385), (30, 957026), (35, 820308), (42, 683590), (60, 478513), (70, 410154), (84, 341795), (105, 273436), (140, 205077), (197, 145740), (210, 136718), (347, 82740), (394, 72870), (420, 68359), (591, 48580), (694, 41370), (788, 36435), (985, 29148), (1041, 27580), (1182, 24290), (1379, 20820), (1388, 20685), (1735, 16548), (1970, 14574), (2082, 13790), (2364, 12145), (2429, 11820), (2758, 10410), (2955, 9716), (3470, 8274), (3940, 7287), (4137, 6940), (4164, 6895), (4858, 5910), (5205, 5516)]