21513426

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4591}}^1$

素因数の和:4678

約数の個数: 32

約数和(自身を含む): 47609856

約数和(自身を除く): 26096430

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 71, 142, 213, 426, 781, 1562, 2343, 4591, 4686, 9182, 13773, 27546, 50501, 101002, 151503, 303006, 325961, 651922, 977883, 1955766, 3585571, 7171142, 10756713, 21513426]

約数ペア:

[(1, 21513426), (2, 10756713), (3, 7171142), (6, 3585571), (11, 1955766), (22, 977883), (33, 651922), (66, 325961), (71, 303006), (142, 151503), (213, 101002), (426, 50501), (781, 27546), (1562, 13773), (2343, 9182), (4591, 4686)]