28771407

素因数分解:

$3^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1777}}^1$

素因数の和:2047

約数の個数: 24

約数和(自身を含む): 47707296

約数和(自身を除く): 18935889

約数列:

[1, 3, 7, 9, 21, 63, 257, 771, 1777, 1799, 2313, 5331, 5397, 12439, 15993, 16191, 37317, 111951, 456689, 1370067, 3196823, 4110201, 9590469, 28771407]

約数ペア:

[(1, 28771407), (3, 9590469), (7, 4110201), (9, 3196823), (21, 1370067), (63, 456689), (257, 111951), (771, 37317), (1777, 16191), (1799, 15993), (2313, 12439), (5331, 5397)]