81638040208

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1\times {\mathrm{10499}}^1$

素因数の和:10856

約数の個数: 80

約数和(自身を含む): 166614336000

約数和(自身を除く): 84976295792

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 244, 248, 257, 488, 496, 514, 976, 1028, 1891, 2056, 3782, 4112, 7564, 7967, 10499, 15128, 15677, 15934, 20998, 30256, 31354, 31868, 41996, 62708, 63736, 83992, 125416, 127472, 167984, 250832, 325469, 485987, 640439, 650938, 971974, 1280878, 1301876, 1943948, 2561756, 2603752, 2698243, 3887896, 5123512, 5207504, 5396486, 7775792, 10247024, 10792972, 19853609, 21585944, 39707218, 43171888, 79414436, 83645533, 158828872, 164592823, 167291066, 317657744, 329185646, 334582132, 658371292, 669164264, 1316742584, 1338328528, 2633485168, 5102377513, 10204755026, 20409510052, 40819020104, 81638040208]

約数ペア:

[(1, 81638040208), (2, 40819020104), (4, 20409510052), (8, 10204755026), (16, 5102377513), (31, 2633485168), (61, 1338328528), (62, 1316742584), (122, 669164264), (124, 658371292), (244, 334582132), (248, 329185646), (257, 317657744), (488, 167291066), (496, 164592823), (514, 158828872), (976, 83645533), (1028, 79414436), (1891, 43171888), (2056, 39707218), (3782, 21585944), (4112, 19853609), (7564, 10792972), (7967, 10247024), (10499, 7775792), (15128, 5396486), (15677, 5207504), (15934, 5123512), (20998, 3887896), (30256, 2698243), (31354, 2603752), (31868, 2561756), (41996, 1943948), (62708, 1301876), (63736, 1280878), (83992, 971974), (125416, 650938), (127472, 640439), (167984, 485987), (250832, 325469)]