18869711

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{617}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 22959936

約数和(自身を除く): 4090225

約数列:

[1, 7, 17, 119, 257, 617, 1799, 4319, 4369, 10489, 30583, 73423, 158569, 1109983, 2695673, 18869711]

約数ペア:

[(1, 18869711), (7, 2695673), (17, 1109983), (119, 158569), (257, 73423), (617, 30583), (1799, 10489), (4319, 4369)]