21216175057

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3880771}}^1$

素因数の和:3880860

約数の個数: 16

約数和(自身を含む): 26823896064

約数和(自身を除く): 5607721007

約数列:

[1, 7, 11, 71, 77, 497, 781, 5467, 3880771, 27165397, 42688481, 275534741, 298819367, 1928743187, 3030882151, 21216175057]

約数ペア:

[(1, 21216175057), (7, 3030882151), (11, 1928743187), (71, 298819367), (77, 275534741), (497, 42688481), (781, 27165397), (5467, 3880771)]