21560714

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 38413440

約数和(自身を除く): 16852726

約数列:

[1, 2, 7, 14, 37, 74, 107, 214, 259, 389, 518, 749, 778, 1498, 2723, 3959, 5446, 7918, 14393, 27713, 28786, 41623, 55426, 83246, 100751, 201502, 291361, 582722, 1540051, 3080102, 10780357, 21560714]

約数ペア:

[(1, 21560714), (2, 10780357), (7, 3080102), (14, 1540051), (37, 582722), (74, 291361), (107, 201502), (214, 100751), (259, 83246), (389, 55426), (518, 41623), (749, 28786), (778, 27713), (1498, 14393), (2723, 7918), (3959, 5446)]