20256495

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1873}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 37420032

約数和(自身を除く): 17163537

約数列:

[1, 3, 5, 7, 15, 21, 35, 103, 105, 309, 515, 721, 1545, 1873, 2163, 3605, 5619, 9365, 10815, 13111, 28095, 39333, 65555, 192919, 196665, 578757, 964595, 1350433, 2893785, 4051299, 6752165, 20256495]

約数ペア:

[(1, 20256495), (3, 6752165), (5, 4051299), (7, 2893785), (15, 1350433), (21, 964595), (35, 578757), (103, 196665), (105, 192919), (309, 65555), (515, 39333), (721, 28095), (1545, 13111), (1873, 10815), (2163, 9365), (3605, 5619)]