81350720

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^3\times {\mathrm{191}}^1$

素因数の和:241

約数の個数: 112

約数和(自身を含む): 214189056

約数和(自身を除く): 132838336

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 160, 176, 191, 220, 242, 320, 352, 382, 440, 484, 605, 704, 764, 880, 955, 968, 1210, 1331, 1528, 1760, 1910, 1936, 2101, 2420, 2662, 3056, 3520, 3820, 3872, 4202, 4840, 5324, 6112, 6655, 7640, 7744, 8404, 9680, 10505, 10648, 12224, 13310, 15280, 16808, 19360, 21010, 21296, 23111, 26620, 30560, 33616, 38720, 42020, 42592, 46222, 53240, 61120, 67232, 84040, 85184, 92444, 106480, 115555, 134464, 168080, 184888, 212960, 231110, 254221, 336160, 369776, 425920, 462220, 508442, 672320, 739552, 924440, 1016884, 1271105, 1479104, 1848880, 2033768, 2542210, 3697760, 4067536, 5084420, 7395520, 8135072, 10168840, 16270144, 20337680, 40675360, 81350720]

約数ペア:

[(1, 81350720), (2, 40675360), (4, 20337680), (5, 16270144), (8, 10168840), (10, 8135072), (11, 7395520), (16, 5084420), (20, 4067536), (22, 3697760), (32, 2542210), (40, 2033768), (44, 1848880), (55, 1479104), (64, 1271105), (80, 1016884), (88, 924440), (110, 739552), (121, 672320), (160, 508442), (176, 462220), (191, 425920), (220, 369776), (242, 336160), (320, 254221), (352, 231110), (382, 212960), (440, 184888), (484, 168080), (605, 134464), (704, 115555), (764, 106480), (880, 92444), (955, 85184), (968, 84040), (1210, 67232), (1331, 61120), (1528, 53240), (1760, 46222), (1910, 42592), (1936, 42020), (2101, 38720), (2420, 33616), (2662, 30560), (3056, 26620), (3520, 23111), (3820, 21296), (3872, 21010), (4202, 19360), (4840, 16808), (5324, 15280), (6112, 13310), (6655, 12224), (7640, 10648), (7744, 10505), (8404, 9680)]