20939487

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{1531}}^1$

素因数の和:1678

約数の個数: 16

約数和(自身を含む): 28826112

約数和(自身を除く): 7886625

約数列:

[1, 3, 47, 97, 141, 291, 1531, 4559, 4593, 13677, 71957, 148507, 215871, 445521, 6979829, 20939487]

約数ペア:

[(1, 20939487), (3, 6979829), (47, 445521), (97, 215871), (141, 148507), (291, 71957), (1531, 13677), (4559, 4593)]