19521957

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1663}}^1$

素因数の和:1729

約数の個数: 32

約数和(自身を含む): 32800768

約数和(自身を除く): 13278811

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1663, 1677, 3913, 4989, 11641, 11739, 21619, 34923, 64857, 71509, 151333, 214527, 453999, 500563, 929617, 1501689, 2788851, 6507319, 19521957]

約数ペア:

[(1, 19521957), (3, 6507319), (7, 2788851), (13, 1501689), (21, 929617), (39, 500563), (43, 453999), (91, 214527), (129, 151333), (273, 71509), (301, 64857), (559, 34923), (903, 21619), (1663, 11739), (1677, 11641), (3913, 4989)]