19707754

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 34933248

約数和(自身を除く): 15225494

約数列:

[1, 2, 11, 22, 31, 37, 62, 71, 74, 121, 142, 242, 341, 407, 682, 781, 814, 1147, 1562, 2201, 2294, 2627, 3751, 4402, 4477, 5254, 7502, 8591, 8954, 12617, 17182, 24211, 25234, 28897, 48422, 57794, 81437, 138787, 162874, 266321, 277574, 317867, 532642, 635734, 895807, 1791614, 9853877, 19707754]

約数ペア:

[(1, 19707754), (2, 9853877), (11, 1791614), (22, 895807), (31, 635734), (37, 532642), (62, 317867), (71, 277574), (74, 266321), (121, 162874), (142, 138787), (242, 81437), (341, 57794), (407, 48422), (682, 28897), (781, 25234), (814, 24211), (1147, 17182), (1562, 12617), (2201, 8954), (2294, 8591), (2627, 7502), (3751, 5254), (4402, 4477)]