20524280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3187}}^1$

素因数の和:3228

約数の個数: 64

約数和(自身を含む): 55088640

約数和(自身を除く): 34564360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3187, 3220, 6374, 6440, 12748, 15935, 22309, 25496, 31870, 44618, 63740, 73301, 89236, 111545, 127480, 146602, 178472, 223090, 293204, 366505, 446180, 513107, 586408, 733010, 892360, 1026214, 1466020, 2052428, 2565535, 2932040, 4104856, 5131070, 10262140, 20524280]

約数ペア:

[(1, 20524280), (2, 10262140), (4, 5131070), (5, 4104856), (7, 2932040), (8, 2565535), (10, 2052428), (14, 1466020), (20, 1026214), (23, 892360), (28, 733010), (35, 586408), (40, 513107), (46, 446180), (56, 366505), (70, 293204), (92, 223090), (115, 178472), (140, 146602), (161, 127480), (184, 111545), (230, 89236), (280, 73301), (322, 63740), (460, 44618), (644, 31870), (805, 25496), (920, 22309), (1288, 15935), (1610, 12748), (3187, 6440), (3220, 6374)]