21703339

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 28684800

約数和(自身を除く): 6981461

約数列:

[1, 7, 17, 19, 29, 119, 133, 203, 323, 331, 493, 551, 2261, 2317, 3451, 3857, 5627, 6289, 9367, 9599, 39389, 44023, 65569, 67193, 106913, 163183, 182381, 748391, 1142281, 1276667, 3100477, 21703339]

約数ペア:

[(1, 21703339), (7, 3100477), (17, 1276667), (19, 1142281), (29, 748391), (119, 182381), (133, 163183), (203, 106913), (323, 67193), (331, 65569), (493, 44023), (551, 39389), (2261, 9599), (2317, 9367), (3451, 6289), (3857, 5627)]