21157432

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{193}}^2$

素因数の和:463

約数の個数: 24

約数和(自身を含む): 40438440

約数和(自身を除く): 19281008

約数列:

[1, 2, 4, 8, 71, 142, 193, 284, 386, 568, 772, 1544, 13703, 27406, 37249, 54812, 74498, 109624, 148996, 297992, 2644679, 5289358, 10578716, 21157432]

約数ペア:

[(1, 21157432), (2, 10578716), (4, 5289358), (8, 2644679), (71, 297992), (142, 148996), (193, 109624), (284, 74498), (386, 54812), (568, 37249), (772, 27406), (1544, 13703)]