21946813

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4289}}^1$

素因数の和:4356

約数の個数: 16

約数和(自身を含む): 27181440

約数和(自身を除く): 5234627

約数列:

[1, 7, 17, 43, 119, 301, 731, 4289, 5117, 30023, 72913, 184427, 510391, 1290989, 3135259, 21946813]

約数ペア:

[(1, 21946813), (7, 3135259), (17, 1290989), (43, 510391), (119, 184427), (301, 72913), (731, 30023), (4289, 5117)]