2020404880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{45179}}^1$

素因数の和:45248

約数の個数: 80

約数和(自身を含む): 5176543680

約数和(自身を除く): 3156138800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1720, 2236, 2795, 3440, 4472, 5590, 8944, 11180, 22360, 44720, 45179, 90358, 180716, 225895, 361432, 451790, 587327, 722864, 903580, 1174654, 1807160, 1942697, 2349308, 2936635, 3614320, 3885394, 4698616, 5873270, 7770788, 9397232, 9713485, 11746540, 15541576, 19426970, 23493080, 25255061, 31083152, 38853940, 46986160, 50510122, 77707880, 101020244, 126275305, 155415760, 202040488, 252550610, 404080976, 505101220, 1010202440, 2020404880]

約数ペア:

[(1, 2020404880), (2, 1010202440), (4, 505101220), (5, 404080976), (8, 252550610), (10, 202040488), (13, 155415760), (16, 126275305), (20, 101020244), (26, 77707880), (40, 50510122), (43, 46986160), (52, 38853940), (65, 31083152), (80, 25255061), (86, 23493080), (104, 19426970), (130, 15541576), (172, 11746540), (208, 9713485), (215, 9397232), (260, 7770788), (344, 5873270), (430, 4698616), (520, 3885394), (559, 3614320), (688, 2936635), (860, 2349308), (1040, 1942697), (1118, 1807160), (1720, 1174654), (2236, 903580), (2795, 722864), (3440, 587327), (4472, 451790), (5590, 361432), (8944, 225895), (11180, 180716), (22360, 90358), (44720, 45179)]