20979222

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^3\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 48066048

約数和(自身を除く): 27086826

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 66, 71, 74, 111, 121, 142, 213, 222, 242, 363, 407, 426, 726, 781, 814, 1221, 1331, 1562, 2343, 2442, 2627, 2662, 3993, 4477, 4686, 5254, 7881, 7986, 8591, 8954, 13431, 15762, 17182, 25773, 26862, 28897, 49247, 51546, 57794, 86691, 94501, 98494, 147741, 173382, 189002, 283503, 295482, 317867, 567006, 635734, 953601, 1907202, 3496537, 6993074, 10489611, 20979222]

約数ペア:

[(1, 20979222), (2, 10489611), (3, 6993074), (6, 3496537), (11, 1907202), (22, 953601), (33, 635734), (37, 567006), (66, 317867), (71, 295482), (74, 283503), (111, 189002), (121, 173382), (142, 147741), (213, 98494), (222, 94501), (242, 86691), (363, 57794), (407, 51546), (426, 49247), (726, 28897), (781, 26862), (814, 25773), (1221, 17182), (1331, 15762), (1562, 13431), (2343, 8954), (2442, 8591), (2627, 7986), (2662, 7881), (3993, 5254), (4477, 4686)]