20618080

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:512

約数の個数: 96

約数和(自身を含む): 57153600

約数和(自身を除く): 36535520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 56, 70, 80, 82, 112, 140, 160, 164, 205, 224, 280, 287, 328, 410, 449, 560, 574, 656, 820, 898, 1120, 1148, 1312, 1435, 1640, 1796, 2245, 2296, 2870, 3143, 3280, 3592, 4490, 4592, 5740, 6286, 6560, 7184, 8980, 9184, 11480, 12572, 14368, 15715, 17960, 18409, 22960, 25144, 31430, 35920, 36818, 45920, 50288, 62860, 71840, 73636, 92045, 100576, 125720, 128863, 147272, 184090, 251440, 257726, 294544, 368180, 502880, 515452, 589088, 644315, 736360, 1030904, 1288630, 1472720, 2061808, 2577260, 2945440, 4123616, 5154520, 10309040, 20618080]

約数ペア:

[(1, 20618080), (2, 10309040), (4, 5154520), (5, 4123616), (7, 2945440), (8, 2577260), (10, 2061808), (14, 1472720), (16, 1288630), (20, 1030904), (28, 736360), (32, 644315), (35, 589088), (40, 515452), (41, 502880), (56, 368180), (70, 294544), (80, 257726), (82, 251440), (112, 184090), (140, 147272), (160, 128863), (164, 125720), (205, 100576), (224, 92045), (280, 73636), (287, 71840), (328, 62860), (410, 50288), (449, 45920), (560, 36818), (574, 35920), (656, 31430), (820, 25144), (898, 22960), (1120, 18409), (1148, 17960), (1312, 15715), (1435, 14368), (1640, 12572), (1796, 11480), (2245, 9184), (2296, 8980), (2870, 7184), (3143, 6560), (3280, 6286), (3592, 5740), (4490, 4592)]