31128560

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9049}}^1$

素因数の和:9105

約数の個数: 40

約数和(自身を含む): 74065200

約数和(自身を除く): 42936640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 9049, 18098, 36196, 45245, 72392, 90490, 144784, 180980, 361960, 389107, 723920, 778214, 1556428, 1945535, 3112856, 3891070, 6225712, 7782140, 15564280, 31128560]

約数ペア:

[(1, 31128560), (2, 15564280), (4, 7782140), (5, 6225712), (8, 3891070), (10, 3112856), (16, 1945535), (20, 1556428), (40, 778214), (43, 723920), (80, 389107), (86, 361960), (172, 180980), (215, 144784), (344, 90490), (430, 72392), (688, 45245), (860, 36196), (1720, 18098), (3440, 9049)]