21086919

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6563}}^1$

素因数の和:6596

約数の個数: 32

約数和(自身を含む): 37808640

約数和(自身を除く): 16721721

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6563, 19689, 45941, 59067, 111571, 137823, 177201, 334713, 413469, 780997, 1004139, 1240407, 2342991, 3012417, 7028973, 21086919]

約数ペア:

[(1, 21086919), (3, 7028973), (7, 3012417), (9, 2342991), (17, 1240407), (21, 1004139), (27, 780997), (51, 413469), (63, 334713), (119, 177201), (153, 137823), (189, 111571), (357, 59067), (459, 45941), (1071, 19689), (3213, 6563)]