28740019

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{751}}^1$

素因数の和:847

約数の個数: 24

約数和(自身を含む): 37034496

約数和(自身を除く): 8294477

約数列:

[1, 7, 11, 49, 71, 77, 497, 539, 751, 781, 3479, 5257, 5467, 8261, 36799, 38269, 53321, 57827, 373247, 404789, 586531, 2612729, 4105717, 28740019]

約数ペア:

[(1, 28740019), (7, 4105717), (11, 2612729), (49, 586531), (71, 404789), (77, 373247), (497, 57827), (539, 53321), (751, 38269), (781, 36799), (3479, 8261), (5257, 5467)]