20745815

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1667}}^1$

素因数の和:1822

約数の個数: 16

約数和(自身を含む): 26421120

約数和(自身を除く): 5675305

約数列:

[1, 5, 19, 95, 131, 655, 1667, 2489, 8335, 12445, 31673, 158365, 218377, 1091885, 4149163, 20745815]

約数ペア:

[(1, 20745815), (5, 4149163), (19, 1091885), (95, 218377), (131, 158365), (655, 31673), (1667, 12445), (2489, 8335)]