208539

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:99

約数の個数: 24

約数和(自身を含む): 336960

約数和(自身を除く): 128421

約数列:

[1, 3, 9, 17, 29, 47, 51, 87, 141, 153, 261, 423, 493, 799, 1363, 1479, 2397, 4089, 4437, 7191, 12267, 23171, 69513, 208539]

約数ペア:

[(1, 208539), (3, 69513), (9, 23171), (17, 12267), (29, 7191), (47, 4437), (51, 4089), (87, 2397), (141, 1479), (153, 1363), (261, 799), (423, 493)]