21184639

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3389}}^1$

素因数の和:3462

約数の個数: 16

約数和(自身を含む): 26035200

約数和(自身を除く): 4850561

約数列:

[1, 7, 19, 47, 133, 329, 893, 3389, 6251, 23723, 64391, 159283, 450737, 1114981, 3026377, 21184639]

約数ペア:

[(1, 21184639), (7, 3026377), (19, 1114981), (47, 450737), (133, 159283), (329, 64391), (893, 23723), (3389, 6251)]