28180460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{631}}^1$

素因数の和:687

約数の個数: 96

約数和(自身を含む): 76446720

約数和(自身を除く): 48266260

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 29, 35, 44, 55, 58, 70, 77, 110, 116, 140, 145, 154, 203, 220, 290, 308, 319, 385, 406, 580, 631, 638, 770, 812, 1015, 1262, 1276, 1540, 1595, 2030, 2233, 2524, 3155, 3190, 4060, 4417, 4466, 6310, 6380, 6941, 8834, 8932, 11165, 12620, 13882, 17668, 18299, 22085, 22330, 27764, 34705, 36598, 44170, 44660, 48587, 69410, 73196, 88340, 91495, 97174, 128093, 138820, 182990, 194348, 201289, 242935, 256186, 365980, 402578, 485870, 512372, 640465, 805156, 971740, 1006445, 1280930, 1409023, 2012890, 2561860, 2818046, 4025780, 5636092, 7045115, 14090230, 28180460]

約数ペア:

[(1, 28180460), (2, 14090230), (4, 7045115), (5, 5636092), (7, 4025780), (10, 2818046), (11, 2561860), (14, 2012890), (20, 1409023), (22, 1280930), (28, 1006445), (29, 971740), (35, 805156), (44, 640465), (55, 512372), (58, 485870), (70, 402578), (77, 365980), (110, 256186), (116, 242935), (140, 201289), (145, 194348), (154, 182990), (203, 138820), (220, 128093), (290, 97174), (308, 91495), (319, 88340), (385, 73196), (406, 69410), (580, 48587), (631, 44660), (638, 44170), (770, 36598), (812, 34705), (1015, 27764), (1262, 22330), (1276, 22085), (1540, 18299), (1595, 17668), (2030, 13882), (2233, 12620), (2524, 11165), (3155, 8932), (3190, 8834), (4060, 6941), (4417, 6380), (4466, 6310)]