28780360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:191

約数の個数: 128

約数和(自身を含む): 79833600

約数和(自身を除く): 51053240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 41, 46, 56, 70, 82, 92, 109, 115, 140, 161, 164, 184, 205, 218, 230, 280, 287, 322, 328, 410, 436, 460, 545, 574, 644, 763, 805, 820, 872, 920, 943, 1090, 1148, 1288, 1435, 1526, 1610, 1640, 1886, 2180, 2296, 2507, 2870, 3052, 3220, 3772, 3815, 4360, 4469, 4715, 5014, 5740, 6104, 6440, 6601, 7544, 7630, 8938, 9430, 10028, 11480, 12535, 13202, 15260, 17549, 17876, 18860, 20056, 22345, 25070, 26404, 30520, 31283, 33005, 35098, 35752, 37720, 44690, 50140, 52808, 62566, 66010, 70196, 87745, 89380, 100280, 102787, 125132, 132020, 140392, 156415, 175490, 178760, 205574, 250264, 264040, 312830, 350980, 411148, 513935, 625660, 701960, 719509, 822296, 1027870, 1251320, 1439018, 2055740, 2878036, 3597545, 4111480, 5756072, 7195090, 14390180, 28780360]

約数ペア:

[(1, 28780360), (2, 14390180), (4, 7195090), (5, 5756072), (7, 4111480), (8, 3597545), (10, 2878036), (14, 2055740), (20, 1439018), (23, 1251320), (28, 1027870), (35, 822296), (40, 719509), (41, 701960), (46, 625660), (56, 513935), (70, 411148), (82, 350980), (92, 312830), (109, 264040), (115, 250264), (140, 205574), (161, 178760), (164, 175490), (184, 156415), (205, 140392), (218, 132020), (230, 125132), (280, 102787), (287, 100280), (322, 89380), (328, 87745), (410, 70196), (436, 66010), (460, 62566), (545, 52808), (574, 50140), (644, 44690), (763, 37720), (805, 35752), (820, 35098), (872, 33005), (920, 31283), (943, 30520), (1090, 26404), (1148, 25070), (1288, 22345), (1435, 20056), (1526, 18860), (1610, 17876), (1640, 17549), (1886, 15260), (2180, 13202), (2296, 12535), (2507, 11480), (2870, 10028), (3052, 9430), (3220, 8938), (3772, 7630), (3815, 7544), (4360, 6601), (4469, 6440), (4715, 6104), (5014, 5740)]