21194576

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:244

約数の個数: 80

約数和(自身を含む): 48330240

約数和(自身を除く): 27135664

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 38, 52, 62, 76, 104, 124, 152, 173, 208, 247, 248, 304, 346, 403, 494, 496, 589, 692, 806, 988, 1178, 1384, 1612, 1976, 2249, 2356, 2768, 3224, 3287, 3952, 4498, 4712, 5363, 6448, 6574, 7657, 8996, 9424, 10726, 13148, 15314, 17992, 21452, 26296, 30628, 35984, 42731, 42904, 52592, 61256, 69719, 85462, 85808, 101897, 122512, 139438, 170924, 203794, 278876, 341848, 407588, 557752, 683696, 815176, 1115504, 1324661, 1630352, 2649322, 5298644, 10597288, 21194576]

約数ペア:

[(1, 21194576), (2, 10597288), (4, 5298644), (8, 2649322), (13, 1630352), (16, 1324661), (19, 1115504), (26, 815176), (31, 683696), (38, 557752), (52, 407588), (62, 341848), (76, 278876), (104, 203794), (124, 170924), (152, 139438), (173, 122512), (208, 101897), (247, 85808), (248, 85462), (304, 69719), (346, 61256), (403, 52592), (494, 42904), (496, 42731), (589, 35984), (692, 30628), (806, 26296), (988, 21452), (1178, 17992), (1384, 15314), (1612, 13148), (1976, 10726), (2249, 9424), (2356, 8996), (2768, 7657), (3224, 6574), (3287, 6448), (3952, 5363), (4498, 4712)]