19680507

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4057}}^1$

素因数の和:4088

約数の個数: 36

約数和(自身を含む): 36083736

約数和(自身を除く): 16403229

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4057, 4851, 12171, 28399, 36513, 44627, 85197, 133881, 198793, 255591, 312389, 401643, 596379, 937167, 1789137, 2186723, 2811501, 6560169, 19680507]

約数ペア:

[(1, 19680507), (3, 6560169), (7, 2811501), (9, 2186723), (11, 1789137), (21, 937167), (33, 596379), (49, 401643), (63, 312389), (77, 255591), (99, 198793), (147, 133881), (231, 85197), (441, 44627), (539, 36513), (693, 28399), (1617, 12171), (4057, 4851)]