20139147

素因数分解:

$3^2\times 7^2\times {\mathrm{45667}}^1$

素因数の和:45687

約数の個数: 18

約数和(自身を含む): 33839988

約数和(自身を除く): 13700841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45667, 137001, 319669, 411003, 959007, 2237683, 2877021, 6713049, 20139147]

約数ペア:

[(1, 20139147), (3, 6713049), (7, 2877021), (9, 2237683), (21, 959007), (49, 411003), (63, 319669), (147, 137001), (441, 45667)]