28261520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:592

約数の個数: 80

約数和(自身を含む): 75947520

約数和(自身を除く): 47686000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 436, 463, 545, 560, 763, 872, 926, 1090, 1526, 1744, 1852, 2180, 2315, 3052, 3241, 3704, 3815, 4360, 4630, 6104, 6482, 7408, 7630, 8720, 9260, 12208, 12964, 15260, 16205, 18520, 25928, 30520, 32410, 37040, 50467, 51856, 61040, 64820, 100934, 129640, 201868, 252335, 259280, 353269, 403736, 504670, 706538, 807472, 1009340, 1413076, 1766345, 2018680, 2826152, 3532690, 4037360, 5652304, 7065380, 14130760, 28261520]

約数ペア:

[(1, 28261520), (2, 14130760), (4, 7065380), (5, 5652304), (7, 4037360), (8, 3532690), (10, 2826152), (14, 2018680), (16, 1766345), (20, 1413076), (28, 1009340), (35, 807472), (40, 706538), (56, 504670), (70, 403736), (80, 353269), (109, 259280), (112, 252335), (140, 201868), (218, 129640), (280, 100934), (436, 64820), (463, 61040), (545, 51856), (560, 50467), (763, 37040), (872, 32410), (926, 30520), (1090, 25928), (1526, 18520), (1744, 16205), (1852, 15260), (2180, 12964), (2315, 12208), (3052, 9260), (3241, 8720), (3704, 7630), (3815, 7408), (4360, 6482), (4630, 6104)]