78971291

素因数分解:

$7^4\times {\mathrm{31}}^1\times {\mathrm{1061}}^1$

素因数の和:1120

約数の個数: 20

約数和(自身を含む): 95189184

約数和(自身を除く): 16217893

約数列:

[1, 7, 31, 49, 217, 343, 1061, 1519, 2401, 7427, 10633, 32891, 51989, 74431, 230237, 363923, 1611659, 2547461, 11281613, 78971291]

約数ペア:

[(1, 78971291), (7, 11281613), (31, 2547461), (49, 1611659), (217, 363923), (343, 230237), (1061, 74431), (1519, 51989), (2401, 32891), (7427, 10633)]