20315547

素因数分解:

$3^2\times 7^3\times {\mathrm{6581}}^1$

素因数の和:6608

約数の個数: 24

約数和(自身を含む): 34226400

約数和(自身を除く): 13910853

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6581, 19743, 46067, 59229, 138201, 322469, 414603, 967407, 2257283, 2902221, 6771849, 20315547]

約数ペア:

[(1, 20315547), (3, 6771849), (7, 2902221), (9, 2257283), (21, 967407), (49, 414603), (63, 322469), (147, 138201), (343, 59229), (441, 46067), (1029, 19743), (3087, 6581)]