20640783

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{9787}}^1$

素因数の和:9846

約数の個数: 16

約数和(自身を含む): 29755520

約数和(自身を除く): 9114737

約数列:

[1, 3, 19, 37, 57, 111, 703, 2109, 9787, 29361, 185953, 362119, 557859, 1086357, 6880261, 20640783]

約数ペア:

[(1, 20640783), (3, 6880261), (19, 1086357), (37, 557859), (57, 362119), (111, 185953), (703, 29361), (2109, 9787)]