21169981

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{4339}}^1$

素因数の和:4404

約数の個数: 16

約数和(自身を含む): 26248320

約数和(自身を除く): 5078339

約数列:

[1, 7, 17, 41, 119, 287, 697, 4339, 4879, 30373, 73763, 177899, 516341, 1245293, 3024283, 21169981]

約数ペア:

[(1, 21169981), (7, 3024283), (17, 1245293), (41, 516341), (119, 177899), (287, 73763), (697, 30373), (4339, 4879)]