21552278

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:173

約数の個数: 48

約数和(自身を含む): 38208240

約数和(自身を除く): 16655962

約数列:

[1, 2, 11, 22, 29, 37, 58, 74, 83, 121, 166, 242, 319, 407, 638, 814, 913, 1073, 1826, 2146, 2407, 3071, 3509, 4477, 4814, 6142, 7018, 8954, 10043, 11803, 20086, 23606, 26477, 33781, 52954, 67562, 89059, 129833, 178118, 259666, 291247, 371591, 582494, 743182, 979649, 1959298, 10776139, 21552278]

約数ペア:

[(1, 21552278), (2, 10776139), (11, 1959298), (22, 979649), (29, 743182), (37, 582494), (58, 371591), (74, 291247), (83, 259666), (121, 178118), (166, 129833), (242, 89059), (319, 67562), (407, 52954), (638, 33781), (814, 26477), (913, 23606), (1073, 20086), (1826, 11803), (2146, 10043), (2407, 8954), (3071, 7018), (3509, 6142), (4477, 4814)]