1287440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1$

素因数の和:61

約数の個数: 120

約数和(自身を含む): 3958080

約数和(自身を除く): 2670640

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 19, 20, 22, 28, 35, 38, 40, 44, 55, 56, 70, 76, 77, 80, 88, 95, 110, 112, 121, 133, 140, 152, 154, 176, 190, 209, 220, 242, 266, 280, 304, 308, 380, 385, 418, 440, 484, 532, 560, 605, 616, 665, 760, 770, 836, 847, 880, 968, 1045, 1064, 1210, 1232, 1330, 1463, 1520, 1540, 1672, 1694, 1936, 2090, 2128, 2299, 2420, 2660, 2926, 3080, 3344, 3388, 4180, 4235, 4598, 4840, 5320, 5852, 6160, 6776, 7315, 8360, 8470, 9196, 9680, 10640, 11495, 11704, 13552, 14630, 16093, 16720, 16940, 18392, 22990, 23408, 29260, 32186, 33880, 36784, 45980, 58520, 64372, 67760, 80465, 91960, 117040, 128744, 160930, 183920, 257488, 321860, 643720, 1287440]

約数ペア:

[(1, 1287440), (2, 643720), (4, 321860), (5, 257488), (7, 183920), (8, 160930), (10, 128744), (11, 117040), (14, 91960), (16, 80465), (19, 67760), (20, 64372), (22, 58520), (28, 45980), (35, 36784), (38, 33880), (40, 32186), (44, 29260), (55, 23408), (56, 22990), (70, 18392), (76, 16940), (77, 16720), (80, 16093), (88, 14630), (95, 13552), (110, 11704), (112, 11495), (121, 10640), (133, 9680), (140, 9196), (152, 8470), (154, 8360), (176, 7315), (190, 6776), (209, 6160), (220, 5852), (242, 5320), (266, 4840), (280, 4598), (304, 4235), (308, 4180), (380, 3388), (385, 3344), (418, 3080), (440, 2926), (484, 2660), (532, 2420), (560, 2299), (605, 2128), (616, 2090), (665, 1936), (760, 1694), (770, 1672), (836, 1540), (847, 1520), (880, 1463), (968, 1330), (1045, 1232), (1064, 1210)]