80875760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1039}}^1$

素因数の和:1198

約数の個数: 80

約数和(自身を含む): 216652800

約数和(自身を除く): 135777040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 139, 140, 278, 280, 556, 560, 695, 973, 1039, 1112, 1390, 1946, 2078, 2224, 2780, 3892, 4156, 4865, 5195, 5560, 7273, 7784, 8312, 9730, 10390, 11120, 14546, 15568, 16624, 19460, 20780, 29092, 36365, 38920, 41560, 58184, 72730, 77840, 83120, 116368, 144421, 145460, 288842, 290920, 577684, 581840, 722105, 1010947, 1155368, 1444210, 2021894, 2310736, 2888420, 4043788, 5054735, 5776840, 8087576, 10109470, 11553680, 16175152, 20218940, 40437880, 80875760]

約数ペア:

[(1, 80875760), (2, 40437880), (4, 20218940), (5, 16175152), (7, 11553680), (8, 10109470), (10, 8087576), (14, 5776840), (16, 5054735), (20, 4043788), (28, 2888420), (35, 2310736), (40, 2021894), (56, 1444210), (70, 1155368), (80, 1010947), (112, 722105), (139, 581840), (140, 577684), (278, 290920), (280, 288842), (556, 145460), (560, 144421), (695, 116368), (973, 83120), (1039, 77840), (1112, 72730), (1390, 58184), (1946, 41560), (2078, 38920), (2224, 36365), (2780, 29092), (3892, 20780), (4156, 19460), (4865, 16624), (5195, 15568), (5560, 14546), (7273, 11120), (7784, 10390), (8312, 9730)]