19898744

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 38607840

約数和(自身を除く): 18709096

約数列:

[1, 2, 4, 8, 53, 71, 106, 142, 212, 284, 424, 568, 661, 1322, 2644, 3763, 5288, 7526, 15052, 30104, 35033, 46931, 70066, 93862, 140132, 187724, 280264, 375448, 2487343, 4974686, 9949372, 19898744]

約数ペア:

[(1, 19898744), (2, 9949372), (4, 4974686), (8, 2487343), (53, 375448), (71, 280264), (106, 187724), (142, 140132), (212, 93862), (284, 70066), (424, 46931), (568, 35033), (661, 30104), (1322, 15052), (2644, 7526), (3763, 5288)]