20208237

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 33707520

約数和(自身を除く): 13499283

約数列:

[1, 3, 7, 21, 23, 43, 49, 69, 129, 139, 147, 161, 301, 417, 483, 903, 973, 989, 1127, 2107, 2919, 2967, 3197, 3381, 5977, 6321, 6811, 6923, 9591, 17931, 20433, 20769, 22379, 41839, 48461, 67137, 125517, 137471, 145383, 156653, 292873, 412413, 469959, 878619, 962297, 2886891, 6736079, 20208237]

約数ペア:

[(1, 20208237), (3, 6736079), (7, 2886891), (21, 962297), (23, 878619), (43, 469959), (49, 412413), (69, 292873), (129, 156653), (139, 145383), (147, 137471), (161, 125517), (301, 67137), (417, 48461), (483, 41839), (903, 22379), (973, 20769), (989, 20433), (1127, 17931), (2107, 9591), (2919, 6923), (2967, 6811), (3197, 6321), (3381, 5977)]