19809987

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{2089}}^1$

素因数の和:2230

約数の個数: 16

約数和(自身を含む): 27588000

約数和(自身を除く): 7778013

約数列:

[1, 3, 29, 87, 109, 327, 2089, 3161, 6267, 9483, 60581, 181743, 227701, 683103, 6603329, 19809987]

約数ペア:

[(1, 19809987), (3, 6603329), (29, 683103), (87, 227701), (109, 181743), (327, 60581), (2089, 9483), (3161, 6267)]