21001681

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:420

約数の個数: 16

約数和(自身を含む): 23089104

約数和(自身を除く): 2087423

約数列:

[1, 17, 37, 173, 193, 629, 2941, 3281, 6401, 7141, 33389, 108817, 121397, 567613, 1235393, 21001681]

約数ペア:

[(1, 21001681), (17, 1235393), (37, 567613), (173, 121397), (193, 108817), (629, 33389), (2941, 7141), (3281, 6401)]