64511440

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2351}}^1$

素因数の和:2385

約数の個数: 80

約数和(自身を含む): 174988800

約数和(自身を除く): 110477360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2351, 2744, 3430, 3920, 4702, 5488, 6860, 9404, 11755, 13720, 16457, 18808, 23510, 27440, 32914, 37616, 47020, 65828, 82285, 94040, 115199, 131656, 164570, 188080, 230398, 263312, 329140, 460796, 575995, 658280, 806393, 921592, 1151990, 1316560, 1612786, 1843184, 2303980, 3225572, 4031965, 4607960, 6451144, 8063930, 9215920, 12902288, 16127860, 32255720, 64511440]

約数ペア:

[(1, 64511440), (2, 32255720), (4, 16127860), (5, 12902288), (7, 9215920), (8, 8063930), (10, 6451144), (14, 4607960), (16, 4031965), (20, 3225572), (28, 2303980), (35, 1843184), (40, 1612786), (49, 1316560), (56, 1151990), (70, 921592), (80, 806393), (98, 658280), (112, 575995), (140, 460796), (196, 329140), (245, 263312), (280, 230398), (343, 188080), (392, 164570), (490, 131656), (560, 115199), (686, 94040), (784, 82285), (980, 65828), (1372, 47020), (1715, 37616), (1960, 32914), (2351, 27440), (2744, 23510), (3430, 18808), (3920, 16457), (4702, 13720), (5488, 11755), (6860, 9404)]