21587020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{409}}^1$

素因数の和:467

約数の個数: 96

約数和(自身を含む): 57859200

約数和(自身を除く): 36272180

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 29, 35, 52, 58, 65, 70, 91, 116, 130, 140, 145, 182, 203, 260, 290, 364, 377, 406, 409, 455, 580, 754, 812, 818, 910, 1015, 1508, 1636, 1820, 1885, 2030, 2045, 2639, 2863, 3770, 4060, 4090, 5278, 5317, 5726, 7540, 8180, 10556, 10634, 11452, 11861, 13195, 14315, 21268, 23722, 26390, 26585, 28630, 37219, 47444, 52780, 53170, 57260, 59305, 74438, 83027, 106340, 118610, 148876, 154193, 166054, 186095, 237220, 308386, 332108, 372190, 415135, 616772, 744380, 770965, 830270, 1079351, 1541930, 1660540, 2158702, 3083860, 4317404, 5396755, 10793510, 21587020]

約数ペア:

[(1, 21587020), (2, 10793510), (4, 5396755), (5, 4317404), (7, 3083860), (10, 2158702), (13, 1660540), (14, 1541930), (20, 1079351), (26, 830270), (28, 770965), (29, 744380), (35, 616772), (52, 415135), (58, 372190), (65, 332108), (70, 308386), (91, 237220), (116, 186095), (130, 166054), (140, 154193), (145, 148876), (182, 118610), (203, 106340), (260, 83027), (290, 74438), (364, 59305), (377, 57260), (406, 53170), (409, 52780), (455, 47444), (580, 37219), (754, 28630), (812, 26585), (818, 26390), (910, 23722), (1015, 21268), (1508, 14315), (1636, 13195), (1820, 11861), (1885, 11452), (2030, 10634), (2045, 10556), (2639, 8180), (2863, 7540), (3770, 5726), (4060, 5317), (4090, 5278)]