20420265

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13217}}^1$

素因数の和:13328

約数の個数: 16

約数和(自身を含む): 32992128

約数和(自身を除く): 12571863

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 13217, 39651, 66085, 198255, 1361351, 4084053, 6806755, 20420265]

約数ペア:

[(1, 20420265), (3, 6806755), (5, 4084053), (15, 1361351), (103, 198255), (309, 66085), (515, 39651), (1545, 13217)]