20001639

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 32555520

約数和(自身を除く): 12553881

約数列:

[1, 3, 7, 17, 21, 51, 119, 179, 313, 357, 537, 939, 1253, 2191, 3043, 3759, 5321, 6573, 9129, 15963, 21301, 37247, 56027, 63903, 111741, 168081, 392189, 952459, 1176567, 2857377, 6667213, 20001639]

約数ペア:

[(1, 20001639), (3, 6667213), (7, 2857377), (17, 1176567), (21, 952459), (51, 392189), (119, 168081), (179, 111741), (313, 63903), (357, 56027), (537, 37247), (939, 21301), (1253, 15963), (2191, 9129), (3043, 6573), (3759, 5321)]