21179840

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^2\times {\mathrm{547}}^1$

素因数の和:586

約数の個数: 84

約数和(自身を含む): 55537608

約数和(自身を除く): 34357768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 160, 176, 220, 242, 320, 352, 440, 484, 547, 605, 704, 880, 968, 1094, 1210, 1760, 1936, 2188, 2420, 2735, 3520, 3872, 4376, 4840, 5470, 6017, 7744, 8752, 9680, 10940, 12034, 17504, 19360, 21880, 24068, 30085, 35008, 38720, 43760, 48136, 60170, 66187, 87520, 96272, 120340, 132374, 175040, 192544, 240680, 264748, 330935, 385088, 481360, 529496, 661870, 962720, 1058992, 1323740, 1925440, 2117984, 2647480, 4235968, 5294960, 10589920, 21179840]

約数ペア:

[(1, 21179840), (2, 10589920), (4, 5294960), (5, 4235968), (8, 2647480), (10, 2117984), (11, 1925440), (16, 1323740), (20, 1058992), (22, 962720), (32, 661870), (40, 529496), (44, 481360), (55, 385088), (64, 330935), (80, 264748), (88, 240680), (110, 192544), (121, 175040), (160, 132374), (176, 120340), (220, 96272), (242, 87520), (320, 66187), (352, 60170), (440, 48136), (484, 43760), (547, 38720), (605, 35008), (704, 30085), (880, 24068), (968, 21880), (1094, 19360), (1210, 17504), (1760, 12034), (1936, 10940), (2188, 9680), (2420, 8752), (2735, 7744), (3520, 6017), (3872, 5470), (4376, 4840)]